The release team just announced availability of the January update:
http://blogs.technet.com/b/office_sustained_engineering/ (worth bookmarking)
I went looking for the QAT fix in that blog and did not find it there (actually, I gave up before reaching the end because it was so much of search for a needle in a haystack. ie this months KB:
https://support.microsoft.com/en-us/kb/3131245
lists 20 KB articles for Office 2016
Some of the articles have a section like this:
<snip https://support.microsoft.com/en-us/kb/3114536>
Fixes the following issues:
- You start Outlook 2016, and you use a right-to-left language. In this situation, when you move another window over Outlook 2016, a redraw issue occurs, and the background of Outlook 2016 isn't repainted correctly. Therefore, it is difficult to read the
content in Outlook 2016.
- After you change from Mouse mode to Touch mode in Office 2016 applications, the Quick Access Toolbar (QAT) icons aren't enlarged.
<snip>
but others are totally opaque. This one just lists a bunch of files, but no indication of why they are listed:
https://support.microsoft.com/en-us/kb/3131245
And, actually I assume that this fix would not be there since it was released 2 days after the blog was published. Will this fix, and Styles Pane problem ever be added to that blog?
https://answers.microsoft.com/en-us/office/forum/office_2016-word/word-2016-styles-pane-corrupted/be2f03ff-c127-45e2-89b9-ce4806ca37ee?page=5&msgId=500f9529-88aa-4868-8202-3588966e3e44
My guess would be that these fixes will not be added to that entry.
I can only hope there will be a new supplementary notice like there was in November. But given MS's track record, I would not be surprised if documentation of these important fixes "slips through the cracks".