diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b5aa0a6..a1cd1f7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,6 +1,7 @@
 name: Release
 
-# Runs when a version tag is pushed: v1.0.0, v1.0.1, ...
+# Runs when a version tag is pushed: v1.0.0, v1.0.1, and a beta such as v2.0.0b1.
+# PyPI keeps a beta apart: pip installs it only when it is asked for.
 # Publishes the two packages to PyPI with trusted publishing: PyPI accepts
 # the upload because it comes from this workflow in this repository. No
 # token is stored anywhere.
diff --git a/README.md b/README.md
index 56f1834..a3952c5 100644
--- a/README.md
+++ b/README.md
@@ -41,14 +41,26 @@ This repository has five packages.
 
 ## Install
 
-Version 1.0.0 is on PyPI. Python 3.9 or later. No dependencies.
+Python 3.9 or later. No dependencies.
+
+| Version | State | Install |
+|---|---|---|
+| 1.0.0 | Stable. On PyPI | `pip install codeupipe` |
+| 2.0.0b1 | Beta. The `beta` branch of this repository. Not on PyPI yet | From this repository, see below |
+
+This README describes version 2, the beta. A beta can change in a way that
+is not compatible, from one beta to the next. `pip install codeupipe` does
+not install a beta: pip installs one only when you ask for it, with
+`pip install --pre codeupipe` or with the exact version.
+
+Until the beta is on PyPI, install it from this repository:
 
 ```bash
-pip install codeupipe
+pip install "codeupipe @ git+https://github.com/orchestrate-solutions/codeupipe@beta#subdirectory=packages/codeupipe"
+pip install "codeupipe-lint @ git+https://github.com/orchestrate-solutions/codeupipe@beta#subdirectory=packages/codeupipe-lint"
 ```
 
-`codeupipe-lint` 1.0.0 is not on PyPI yet. Until it is, install it from this
-repository:
+`codeupipe-lint` 1.0.0 is not on PyPI. Install it from the tag `v1.0.0`:
 
 ```bash
 pip install "codeupipe-lint @ git+https://github.com/orchestrate-solutions/codeupipe@v1.0.0#subdirectory=packages/codeupipe-lint"
@@ -57,6 +69,21 @@ pip install "codeupipe-lint @ git+https://github.com/orchestrate-solutions/codeu
 Version 1.0.0 is not compatible with `codeupipe` 0.10.0. It is a new
 library with the same name.
 
+### Changes from 1.0.0 to 2.0.0b1
+
+These changes are not compatible with 1.0.0.
+
+- **A step is reported by a label, the name of its class.** State and Hooks
+  give `DiscountFilter`, where 1.0.0 gave the full path
+  `examples.pricing.discount_filter.DiscountFilter`.
+- **Removed:** `AnonymousStep`, `Pipeline.identities` (use
+  `Pipeline.labels`), `Pipeline.step_sites`, and lint rule CUP-A006.
+- **`codeupipe.lower` is now `codeupipe.compile`.** The command is
+  `python -m codeupipe.compile`.
+
+The TypeScript packages are new. They are version `1.0.0-beta.1` and are not on
+npm.
+
 ## Example
 
 [examples/pricing/](examples/pricing/) has one class in each file. The
diff --git a/packages/codeupipe-compile-ts/README.md b/packages/codeupipe-compile-ts/README.md
index 6f2b426..2357435 100644
--- a/packages/codeupipe-compile-ts/README.md
+++ b/packages/codeupipe-compile-ts/README.md
@@ -1,8 +1,7 @@
 # codeupipe-compile for TypeScript
 
 Writes a codeupipe pipeline as one plain TypeScript module with no import
-of codeupipe. It reads the source and does not run it. It is not on npm
-yet.
+of codeupipe. It reads the source and does not run it. It is a beta, version `1.0.0-beta.1`, and it is not on npm yet.
 
 **The rule: code that compiles gives the same output as the pipeline. A
 pipeline for which the compiler cannot keep that rule is refused, with the
diff --git a/packages/codeupipe-compile-ts/package-lock.json b/packages/codeupipe-compile-ts/package-lock.json
index 7b691b9..fbf2527 100644
--- a/packages/codeupipe-compile-ts/package-lock.json
+++ b/packages/codeupipe-compile-ts/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "codeupipe-compile",
-  "version": "0.1.0",
+  "version": "1.0.0-beta.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "codeupipe-compile",
-      "version": "0.1.0",
+      "version": "1.0.0-beta.1",
       "license": "Apache-2.0",
       "dependencies": {
         "codeupipe": "file:../codeupipe-ts",
@@ -24,7 +24,7 @@
     },
     "../codeupipe-ts": {
       "name": "codeupipe",
-      "version": "0.1.0",
+      "version": "1.0.0-beta.1",
       "license": "Apache-2.0",
       "devDependencies": {
         "@types/node": "^24.0.0",
diff --git a/packages/codeupipe-compile-ts/package.json b/packages/codeupipe-compile-ts/package.json
index d5e2406..cfee3fc 100644
--- a/packages/codeupipe-compile-ts/package.json
+++ b/packages/codeupipe-compile-ts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codeupipe-compile",
-  "version": "0.1.0",
+  "version": "1.0.0-beta.1",
   "private": true,
   "description": "Writes a codeupipe pipeline as plain TypeScript with no import of codeupipe.",
   "license": "Apache-2.0",
diff --git a/packages/codeupipe-lint-ts/README.md b/packages/codeupipe-lint-ts/README.md
index b5a98a6..5f4668b 100644
--- a/packages/codeupipe-lint-ts/README.md
+++ b/packages/codeupipe-lint-ts/README.md
@@ -1,7 +1,7 @@
 # codeupipe-lint for TypeScript
 
 A linter for TypeScript code that uses codeupipe. It reads the source and
-does not run it. It is not on npm yet.
+does not run it. It is a beta, version `1.0.0-beta.1`, and it is not on npm yet.
 
 The linter is a codeupipe pipeline: [src/lint-pipeline.ts](src/lint-pipeline.ts).
 It depends on `codeupipe` and on the `typescript` package, which it uses to
diff --git a/packages/codeupipe-lint-ts/package-lock.json b/packages/codeupipe-lint-ts/package-lock.json
index c013f6c..c00e595 100644
--- a/packages/codeupipe-lint-ts/package-lock.json
+++ b/packages/codeupipe-lint-ts/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "codeupipe-lint",
-  "version": "0.1.0",
+  "version": "1.0.0-beta.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "codeupipe-lint",
-      "version": "0.1.0",
+      "version": "1.0.0-beta.1",
       "license": "Apache-2.0",
       "dependencies": {
         "codeupipe": "file:../codeupipe-ts",
@@ -24,7 +24,7 @@
     },
     "../codeupipe-ts": {
       "name": "codeupipe",
-      "version": "0.1.0",
+      "version": "1.0.0-beta.1",
       "license": "Apache-2.0",
       "devDependencies": {
         "@types/node": "^24.0.0",
diff --git a/packages/codeupipe-lint-ts/package.json b/packages/codeupipe-lint-ts/package.json
index f36a28a..6d5f607 100644
--- a/packages/codeupipe-lint-ts/package.json
+++ b/packages/codeupipe-lint-ts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codeupipe-lint",
-  "version": "0.1.0",
+  "version": "1.0.0-beta.1",
   "private": true,
   "description": "A linter for TypeScript code that uses codeupipe.",
   "license": "Apache-2.0",
diff --git a/packages/codeupipe-lint/pyproject.toml b/packages/codeupipe-lint/pyproject.toml
index dd4d45c..658572e 100644
--- a/packages/codeupipe-lint/pyproject.toml
+++ b/packages/codeupipe-lint/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "codeupipe-lint"
-version = "1.0.0"
+version = "2.0.0b1"
 description = "Lint rules for codeupipe pipelines."
 readme = "README.md"
 requires-python = ">=3.9"
@@ -13,6 +13,7 @@ license-files = ["LICENSE", "NOTICE"]
 authors = [{name = "Joshua Wink"}]
 keywords = ["codeupipe", "lint", "pipeline"]
 classifiers = [
+    "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
@@ -25,7 +26,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries",
     "Topic :: Software Development :: Quality Assurance",
 ]
-dependencies = ["codeupipe==1.0.0"]
+dependencies = ["codeupipe==2.0.0b1"]
 
 [project.urls]
 Homepage = "https://github.com/orchestrate-solutions/codeupipe"
diff --git a/packages/codeupipe-ts/README.md b/packages/codeupipe-ts/README.md
index d909842..813425e 100644
--- a/packages/codeupipe-ts/README.md
+++ b/packages/codeupipe-ts/README.md
@@ -4,7 +4,7 @@ codeupipe is a library for writing a program as a pipeline of small steps.
 This is the TypeScript runtime. It has no dependencies. The built JavaScript
 runs in a browser and in Node.
 
-It is not on npm yet. It implements the same contract as the Python
+It is a beta, version `1.0.0-beta.1`, and it is not on npm yet. It implements the same contract as the Python
 package, and the same 27 conformance cases judge it:
 [conformance/API.md](../../conformance/API.md).
 
diff --git a/packages/codeupipe-ts/package-lock.json b/packages/codeupipe-ts/package-lock.json
index 4e31871..d3fc45f 100644
--- a/packages/codeupipe-ts/package-lock.json
+++ b/packages/codeupipe-ts/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "codeupipe",
-  "version": "0.1.0",
+  "version": "1.0.0-beta.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "codeupipe",
-      "version": "0.1.0",
+      "version": "1.0.0-beta.1",
       "license": "Apache-2.0",
       "devDependencies": {
         "@types/node": "^24.0.0",
diff --git a/packages/codeupipe-ts/package.json b/packages/codeupipe-ts/package.json
index 069bece..102dfe4 100644
--- a/packages/codeupipe-ts/package.json
+++ b/packages/codeupipe-ts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codeupipe",
-  "version": "0.1.0",
+  "version": "1.0.0-beta.1",
   "private": true,
   "description": "A TypeScript library for writing a program as a pipeline of small steps.",
   "license": "Apache-2.0",
diff --git a/packages/codeupipe/pyproject.toml b/packages/codeupipe/pyproject.toml
index a6b0291..7d2859b 100644
--- a/packages/codeupipe/pyproject.toml
+++ b/packages/codeupipe/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "codeupipe"
-version = "1.0.0"
+version = "2.0.0b1"
 description = "A Python library for writing a program as a pipeline of small steps."
 readme = "README.md"
 requires-python = ">=3.9"
@@ -13,6 +13,7 @@ license-files = ["LICENSE", "NOTICE"]
 authors = [{name = "Joshua Wink"}]
 keywords = ["pipeline", "filter", "payload", "composition"]
 classifiers = [
+    "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",