Meeting drawer no longer saves the wrong date
Picking a date in the meeting drawer saved the day before for most of Europe. It now saves the day you picked.
When you pick a date in the meeting drawer, the meeting now saves on that date. For anyone whose time zone is ahead of UTC, such as most of Europe, the drawer used to save the day before. Picking 18 September in Brussels saved 17 September.
New meetings also record your time zone. Before, a meeting without one was treated as UTC, which could put meeting briefs and "starting soon" emails hours off.