version: Update version and docs after 10.0 release.

api_docs/changelog.md

@@ -18,6 +18,11 @@ clients should check the `zulip_feature_level` field, present in the
 /register`](/api/register-queue) responses, to determine the API
 format used by the Zulip server that they are interacting with.
 
+## Changes in Zulip 11.0
+
+Feature levels 372-375 reserved for future use in 10.x maintenance
+releases.
+
 ## Changes in Zulip 10.0
 
 **Feature level 371**

docs/overview/changelog.md

@@ -1,11 +1,23 @@
 # Version history
 
-This page contains the release history for the Zulip Server 10.x stable
+This page contains the release history for the Zulip server. See also the
-release series. See the [current Zulip changelog][latest-changelog]
+[Zulip release lifecycle](../overview/release-lifecycle.md).
-for newer release series, or the [commit log][commit-log] for an
-up-to-date list of all changes.
 
-## Zulip Server 10.x series (development)
+## Zulip Server 11.x series (development)
+
+This section is an incomplete draft of the release notes for the next
+major release, and is only updated occasionally. See the [commit
+log][commit-log] for an up-to-date list of all changes.
+
+### Zulip Server 11.0
+
+_Unreleased_
+
+#### Upgrade notes for 11.0
+
+- None yet.
+
+## Zulip Server 10.x series
 
 ### Zulip Server 10.0
 
@@ -4598,6 +4610,7 @@ _Released 2015-10-19_
 This section links to the upgrade notes from past releases, so you can
 easily read them all when upgrading across multiple releases.
 
+- [Draft upgrade notes for 11.0](#upgrade-notes-for-110)
 - [Upgrade notes for 10.0](#upgrade-notes-for-100)
 - [Upgrade notes for 9.0](#upgrade-notes-for-90)
 - [Upgrade notes for 8.0](#upgrade-notes-for-80)

docs/production/postgresql-support-table.md

@@ -7,4 +7,4 @@
 | 7.x                  | 12, 13, 14, 15                   |
 | 8.x                  | 12, 13, 14, 15, 16               |
 | 9.x                  | 12, 13, 14, 15, 16               |
-| 10.x (unreleased)    | 13, 14, 15, 16                   |
+| 10.x                 | 13, 14, 15, 16                   |

version.py

@@ -1,6 +1,6 @@
 import os
 
-ZULIP_VERSION = "10.0"
+ZULIP_VERSION = "11.0-dev+git"
 
 # Add information on number of commits and commit hash to version, if available
 zulip_git_version_file = os.path.join(