http://androidcore.com/images/sdk11.jpg
Bản này fix khá nhiều bug và 1 số tính năng mới như sau (lười dịch nên các bác chịu khó đọc tiếng Anh 
):
Resolved Issues
* AlarmClock alert now plays audio/vibe directly, rather than through AlarmManager. AlarmClock alert starts playing audio/vibe in its IntentReceiver, rather than on activity start. These changes should prevent alarms from being blocked by modal dialogs.
* Fixes to device sleep.
* Single tap no longer opens the in-call dialpad; users now need to touch and drag it.
* Fixes a bug causing approximately 1 in 25 outbound messages to freeze up the IMAP connection (to a Gmail based server) when transferred to the Sent folder.
* Removes automatic account setup entries that were broken or not testable. Adds minor fixes to a few of the remaining entries. Makes improvements to warning dialogs used for a few special cases.
* Changes default mail checking interval to every 15 minutes (instead of defaulting to “never”).
* Fixes password-quoting bugs in IMAP, so that users can include special characters in passwords (e.g. spaces).
* Fixes various errors in auto and manual account setup
* Improves reporting for various connection errors, making it easier for the user to diagnose failed account setups.
* Fixes new-mail notifications for POP3 accounts.
* Ensures proper auto-checking of accounts marked as “never check”.
* Now displays date and time using user preference (e.g. 24 hr vs. AM/PM).
* Now shows cc: in message view.
* Improves recovery from POP3 connection failures.
* POP3 parser rules loosened, so the application can work with non-compliant email servers.
* Removes green CALL button as a shortcut for “add a new call”.
New Features
* Maps: Adds details and reviews when a user does a search on Maps and clicks on a business to view it’s details.
* Dialer: In-call screen timeout default is now longer when using the speakerphone.
* Dialer: Adds a “Show dialpad” / “Hide dialpad” item to the in-call menu, to make it easier to discover the DTMF dialpad.
* Adds support for saving attachments from MMS
* Adds support for marquee in layouts.