Installed M Preview 2 on my Nexus 5 this morning -- was running the original M preview (1). Here are some things that I'm noticing:
1) (Obviously) Google Now Launcher app drawer is now 4 apps wide (was 3), removed the letter categories on the left-hand side, and utilizes the Google search bar space on the launcher home screen to search for apps. The launcher also reorients when in landscape mode
2) Google Now on Tap is apparently working now, but I've yet to find a case where it shows you info cards on the screen as demoed at I/O instead of just launching you into the Google Now "side-swipe-to-access" section
a. Go into Google Now > Settings > Now cards > Now on Tap
3) They removed theme options, which means NO MORE DARK MODE D':
4) There's a new Memory settings menu section to view RAM usage
5) You can edit what shows up in the Status bar (cell, wifi, etc. icons), show the battery percentage inside of the battery icon, as well as enable a "Demo mode" to make the status bar icons and time static.
a. Go to Developer Options > Enable "Show SystemUI Tuner" > Back to main settings menu > System UI Tuner
6) FIXED: Camera images no longer inverted in photo apps like Snapchat, Instagram, etc.
7) Known apps that don't work: Snapchat v 9.11.0.0 (v 9.10 still works), Venmo (also didn't work in Preview 1)
1) (Obviously) Google Now Launcher app drawer is now 4 apps wide (was 3), removed the letter categories on the left-hand side, and utilizes the Google search bar space on the launcher home screen to search for apps. The launcher also reorients when in landscape mode
2) Google Now on Tap is apparently working now, but I've yet to find a case where it shows you info cards on the screen as demoed at I/O instead of just launching you into the Google Now "side-swipe-to-access" section
a. Go into Google Now > Settings > Now cards > Now on Tap
3) They removed theme options, which means NO MORE DARK MODE D':
4) There's a new Memory settings menu section to view RAM usage
5) You can edit what shows up in the Status bar (cell, wifi, etc. icons), show the battery percentage inside of the battery icon, as well as enable a "Demo mode" to make the status bar icons and time static.
a. Go to Developer Options > Enable "Show SystemUI Tuner" > Back to main settings menu > System UI Tuner
6) FIXED: Camera images no longer inverted in photo apps like Snapchat, Instagram, etc.
7) Known apps that don't work: Snapchat v 9.11.0.0 (v 9.10 still works), Venmo (also didn't work in Preview 1)