Upcoming release - coreboot 4.21
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The 4.21 release is planned for mid-August, 2023

Update this document with changes that should be in the release notes.

* Please use Markdown.
* See the past few release notes for the general format.
* The chip and board additions and removals will be updated right
  before the release, so those do not need to be added.
* Note that all changes before the release are done are marked upcoming.
  A final version of the notes are done after the release.

Significant or interesting changes
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### Add changes that need a full description here

* This section should have full descriptions and can or should have
  a link to the referenced commits.

### Toolchain updates

* Upgrade IASL from 20221020 to 20230628
* Upgrade LLVM from 15.0.7 to 16.0.6
* Upgrade NASM from 2.15.05 to 2.16.01
* Upgrade CMake from 3.26.3 to 3.26.4
* Upgrade GCC from 11.3.0 to 11.4.0

Additional coreboot changes
---------------------------

The following are changes across a number of patches, or changes worth
noting, but not needing a full description.

* Changes that only need a line or two of description go here.

Platform Updates
----------------

* To be filled in immediately before the release by the release team

Plans to move platform support to a branch
------------------------------------------

* Seciton to be filled in or removed after discussion

Statistics from the 4.20 to the 4.21 release
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* To be filled in immediately before the release by the release team


Significant Known and Open Issues
---------------------------------

* To be filled in immediately before the release by the release team