Create 14.7 What's New entry

Merged Michael Karampalas requested to merge mk-whats-new-147 into master

What does this MR do and why?

Describe in detail what your merge request does and why.

Creates the What's New entry for the 14.7 release. IMPORTANT: This should not be merged until after the release post has gone live on the 22nd.

Screenshots or screen recordings

These are strongly recommended to assist reviewers and reduce the time to merge your change.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

Edited by Michael Karampalas