Bump astroid to 3.0.0, update changelog
diff --git a/ChangeLog b/ChangeLog
index 4957021..d363f4b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,9 +2,22 @@
 astroid's ChangeLog
 ===================
 
+
+What's New in astroid 3.1.0?
+============================
+Release date: TBA
+
+
+
+What's New in astroid 3.0.1?
+============================
+Release date: TBA
+
+
+
 What's New in astroid 3.0.0?
 =============================
-Release date: TBA
+Release date: 2023-09-25
 
 * Add support for Python 3.12, including PEP 695 type parameter syntax.
 
@@ -14,6 +27,14 @@
 
   Refs #2137
 
+* Use the global inference cache when inferring, even without an explicit
+  ``InferenceContext``. This is a significant performance improvement given how
+  often methods default to ``None`` for the context argument. (Linting ``astroid``
+  itself now takes ~5% less time on Python 3.12; other projects requiring more
+  complex inference calculations will see greater speedups.)
+
+  Refs #529
+
 * Following a deprecation period starting in astroid 2.7.0, the ``astroid.node_classes``
   and ``astroid.scoped_nodes`` modules have been removed in favor of ``astroid.nodes.node_classes``
   and ``astroid.nodes.scoped_nodes``.
@@ -72,14 +93,6 @@
   Closes pylint-dev/pylint#7464
   Closes pylint-dev/pylint#8074
 
-* Use the global inference cache when inferring, even without an explicit
-  ``InferenceContext``. This is a significant performance improvement given how
-  often methods default to ``None`` for the context argument. (Linting ``astroid``
-  itself now takes ~5% less time on Python 3.12; other projects requiring more
-  complex inference calculations will see greater speedups.)
-
-  Refs #529
-
 * Fix interrupted ``InferenceContext`` call chains, thereby addressing performance
   problems when linting ``sqlalchemy``.
 
diff --git a/astroid/__pkginfo__.py b/astroid/__pkginfo__.py
index 3373449..6c27076 100644
--- a/astroid/__pkginfo__.py
+++ b/astroid/__pkginfo__.py
@@ -2,5 +2,5 @@
 # For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE
 # Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt
 
-__version__ = "3.0.0b1-dev0"
+__version__ = "3.0.0"
 version = __version__
diff --git a/tbump.toml b/tbump.toml
index 9662dc3..35cebfe 100644
--- a/tbump.toml
+++ b/tbump.toml
@@ -1,7 +1,7 @@
 github_url = "https://github.com/pylint-dev/astroid"
 
 [version]
-current = "3.0.0b1-dev0"
+current = "3.0.0"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.