Retire wording tied to pre-2.0 milestones

Several docstrings, comments, and story READMEs still described work as
"expected before v2 is final", "planned before beta", or "revisit before
beta" — milestones that passed with the 2.0 release. Reword the
provisional middleware/dispatcher notes as "may change in a 2.x minor
release", drop the stale beta TODOs, and correct the middleware story:
MCPServer now exposes the same middleware list as the lowlevel Server.

No-Verification-Needed: doc, comment, and docstring wording only

Author: maxisbey

docs/advanced/middleware.md

@@ -5,8 +5,8 @@ A **middleware** is one async function that wraps every message your server rece
 You write it as `async (ctx, call_next)` and append it to `server.middleware`. That is the whole API.
 
 !!! warning
-    The middleware list is marked **provisional** in the source. The signature and semantics are
-    expected to change before v2 is final. Use it to *observe* (timing, logging, tracing) and to
+    The middleware list is marked **provisional** in the source: its signature and semantics may
+    change in a 2.x minor release. Use it to *observe* (timing, logging, tracing) and to
     *refuse* messages; do not make it the foundation your server stands on.
 
 `MCPServer` takes the list at construction (`MCPServer(name, middleware=[...])`) and exposes it as

examples/stories/legacy_routing/README.md

@@ -94,8 +94,7 @@ eras need different auth, rate limits, or scaling.
 - DNS-rebinding protection is on by default; the harness disables it
   (`NO_DNS_REBIND`) because the in-process httpx2 client sends no `Origin`.
   Drop the kwarg for a real deployment.
-- `mcp.shared.inbound` is a deep import path — a shorter re-export is planned
-  before beta.
+- `mcp.shared.inbound` is a deep import path; there is no shorter re-export.
 
 ## Spec
 

examples/stories/middleware/README.md

@@ -31,12 +31,13 @@ uv run python -m stories.middleware.client --http
 
 ## Caveats
 
-- **Lowlevel-only.** `Server.middleware` on `mcp.server.lowlevel.Server` is the
-  one public hook; `MCPServer` has no public accessor for it yet (a
-  `MCPServer.middleware` accessor is planned before beta).
+- **One list, two accessors.** `Server.middleware` on
+  `mcp.server.lowlevel.Server` is the hook this story uses; `MCPServer`
+  exposes the same list as `MCPServer.middleware` (or takes it at
+  construction as `MCPServer(name, middleware=[...])`).
 - The middleware signature is **provisional** (see the TODO in
-  `src/mcp/server/lowlevel/server.py`): it tightens to a covariant `Context[L]`
-  and gains an outbound seam before v2 final.
+  `src/mcp/server/lowlevel/server.py`): it may change in a 2.x minor release,
+  tightening to a covariant `Context[L]` and gaining an outbound seam.
 - `ServerMiddleware` / `CallNext` / `HandlerResult` are imported from
   `mcp.server.context` (helper tier); not re-exported at `mcp.server.lowlevel`.
 - Do **not** `await ctx.session.send_request(...)` while wrapping `initialize`

examples/stories/middleware/server.py

@@ -1,7 +1,7 @@
 """Dispatch-layer middleware: `Server.middleware` is the public hook.
 
-A lowlevel-only story: `MCPServer` has no public middleware accessor yet, so the
-one supported registration point is the `middleware` list on `lowlevel.Server`.
+This story registers on the lowlevel `Server`; `MCPServer` exposes the same
+list as `MCPServer.middleware`, so the recipe carries over unchanged.
 """
 
 import json

examples/stories/roots/README.md

@@ -3,7 +3,6 @@
 > **Deprecated** in the 2026-07-28 protocol (SEP-2577); functional through the
 > deprecation window. Migration: accept directory paths as ordinary tool
 > parameters or resource URIs instead of relying on `roots/list`.
-> TODO(maxisbey): revisit before beta.
 
 The client passes a `list_roots_callback` returning the filesystem locations it
 is willing to expose; a server tool calls `ctx.session.list_roots()` mid-request

examples/stories/sampling/README.md

@@ -3,7 +3,6 @@
 > **Deprecated** in the 2026-07-28 protocol (SEP-2577); functional through the
 > deprecation window. Migration: call your LLM provider directly from the
 > server instead of requesting completions through the client.
-> TODO(maxisbey): revisit before beta.
 
 A tool that asks the **client's** LLM for a completion mid-call — the inverted
 MCP direction. The server holds no model API key; it awaits

examples/stories/serve_one/README.md

@@ -34,15 +34,15 @@ uv run python -m stories.serve_one.client
 ## Caveats
 
 - **Deep imports** — `serve_one`, `serve_connection`, and `Connection` are only
-  reachable at `mcp.server.runner` / `mcp.server.connection` today; a shorter
-  `mcp.server.*` re-export is tracked for beta.
+  reachable at `mcp.server.runner` / `mcp.server.connection`; there is no
+  shorter `mcp.server.*` re-export.
 - **Lowlevel-only.** The drivers take a `lowlevel.Server` and `MCPServer` has
   no public accessor for its underlying one (`_lowlevel_server` is private), so
   there is no `MCPServer`-tier variant of this story. Build the lowlevel
   `Server` directly until that accessor lands.
 - **No public `DispatchContext`** — `SingleExchangeContext` is hand-rolled
-  boilerplate; a public helper (or a `serve_one` overload that builds one) is
-  tracked for beta.
+  boilerplate; there is no public helper (or `serve_one` overload) that builds
+  one.
 - **Lifespan** — the transport entry enters `server.lifespan(server)` **once**
   and threads `lifespan_state` to every `handle_one()` call; never enter it
   per-request.

examples/stories/sse_polling/README.md

@@ -4,7 +4,7 @@
 > the sessionful transport are removed in the 2026-07-28 protocol (SEP-2575)
 > with no modern-era equivalent; the closest 2026-era pattern is client-side
 > reconnection over a persisted `DiscoverResult` —
-> [`reconnect/`](../reconnect/). TODO(maxisbey): revisit before beta.
+> [`reconnect/`](../reconnect/).
 
 SEP-1699 server-initiated SSE disconnection with `Last-Event-ID` replay. The
 server's `EventStore` stamps every SSE event with an ID and opens each response

examples/stories/starlette_mount/README.md

@@ -45,8 +45,7 @@ kill "$SERVER_PID"
   no `Origin` header. Remove it (or configure allowed hosts) for a real
   deployment.
 - The parent-lifespan dance is a known SDK ergonomics gap (other SDKs mount
-  with no extra ceremony); tracked for the beta reshape. The recipe shown here
-  is what works today.
+  with no extra ceremony). The recipe shown here is what works today.
 
 ## Spec
 

examples/stories/streaming/README.md

@@ -55,7 +55,7 @@ uv run python -m stories.streaming.client --http --server server_lowlevel
   through the deprecation window. Migration: write to stderr or emit
   OpenTelemetry instead of `notifications/message`. It is shown here because
   servers still need to support 2025-era clients during that window. Progress
-  and cancellation are **not** deprecated. TODO(maxisbey): revisit before beta.
+  and cancellation are **not** deprecated.
 - A cancelled request is not answered: no response follows
   `notifications/cancelled`. (The 2025-era streamable HTTP transport is the one
   exception - its wire ends a request only with a response, so it terminates