Thought it might be interesting to note what seems to have been fixed that we've noted as longstanding quirks or bugs. These are things I've noted so far.
1. Items listed in explorer search which were deleted from the search results list formerly remained displayed unless on hit F5 to refresh the window.
Now they disappear after about 3s.
2. The Flight Mode/ Airplane Mode button in the Action Centre was at odds with the actual state of the mode unless toggled a couple of times.
Now it works as it should.
3. Desktop icon positions were often lost and icons rearranged on the left side.
Now the positions are retained.
(Confirmed in #135 here:
Desktop icons keep rearranging - Page 14 - Windows 10 Forums