Cover up to 0dad0fc in the 2.5.0 release notes

docs/news.rst

@@ -12,6 +12,8 @@ Highlights:
 
 -   Official Python 3.9 support
 
+-   Experimental :ref:`HTTP/2 support <http2>`
+
 -   New :class:`~scrapy.signals.headers_received` signal that allows stopping
     downloads early
 
@@ -38,6 +40,11 @@ Deprecations
 New features
 ~~~~~~~~~~~~
 
+-   Experimental :ref:`HTTP/2 support <http2>` through a new download handler
+    that can be assigned to the ``https`` protocol in the
+    :setting:`DOWNLOAD_HANDLERS` setting.
+    (:issue:`1854`, :issue:`4769`)
+
 -   The new :class:`~scrapy.signals.headers_received` signal gives early access
     to response headers and allows :ref:`stopping downloads
     <topics-stop-response-download>`.
@@ -108,7 +115,8 @@ Quality Assurance
 
 -   Migrated from Travis CI to GitHub Actions. (:issue:`4924`)
 
--   Fixed CI issues. (:issue:`4986`, :issue:`5020`, :issue:`5022`)
+-   Fixed CI issues.
+    (:issue:`4986`, :issue:`5020`, :issue:`5022`, :issue:`5052`, :issue:`5053`)
 
 -   Refactored complex code (:issue:`4982`, :issue:`5001`, :issue:`5002`)
 

docs/topics/settings.rst

@@ -677,6 +677,8 @@ handler (without replacement), place this in your ``settings.py``::
         'ftp': None,
     }
 
+.. _http2:
+
 The default HTTPS handler uses HTTP/1.1. To use HTTP/2 update
 :setting:`DOWNLOAD_HANDLERS` as follows::
 
@@ -703,7 +705,8 @@ The default HTTPS handler uses HTTP/1.1. To use HTTP/2 update
 
     -   No support for `server pushes`_, which are ignored.
 
-    -   No support for the :signal:`bytes_received` signal.
+    -   No support for the :signal:`bytes_received` and
+        :signal:`headers_received` signals.
 
 .. _frame size: https://tools.ietf.org/html/rfc7540#section-4.2
 .. _http2 faq: https://http2.github.io/faq/#does-http2-require-encryption