Android 5.1 vs Android 6: Widget Menu
Choosing widgets to add on the homescreen is something many Android users love, but the entire UI for this has been the same for year. Old, and ugly to say the least. It reminded me of Android Honeycomb.
With Android M the widget picker tray also received a redesign just like the app tray. This has been needed for years, and now it's finally easier to use. Long press anywhere on the home screen, select "widgets" and here's where you add widgets to your homescreen. This is also now a vertical scrolling drawer with a new green icon as you scroll to indicate how much further you can scroll down, and it looks up-to-date, finally.
With Android 5.1 we had the same side scrolling yet confusing list. In Android M it's broke down alphabetically and very easy to use. Instead of searching endlessly through the widgets list, you'll be able to find the app icon, choose the widget or size, and add it to any homescreen. It's the little things, guys.