###Desktop windowing Desktop windowing enables greater productivity by providing a familiar interface to arrange and resize overlapping windows. See Support multi-window for information on how to support desktop windowing.

Sounds like tablets become more desktop like, like iPads?

###Default contacts account Android users lose some contacts when they switch to a different device. To reduce the loss of contacts, Android 16 introduces the concept of a default account for contacts. To support this feature, your Contacts app should:

Promote cloud sync options to prevent loss of contacts over time Ask users if they want to move their local and SIM contacts to cloud default accounts Discourage creation of new local and SIM contacts

Da heck, what do they mean we lose some contacts when migrating?