As promised, Google has started rolling out Android 4.1.1 update for the HSPA+ version of Galaxy Nexus smartphone and the recently launched Nexus 7 tablet. The update is being released over-the-air in batches and should reach all the devices very soon.
The update size is 147MB for Galaxy Nexus smartphone running on IMM76I build, while users with Galaxy Nexus on I/O Jelly Bean build of JRN84D will get an 8.50MB update.
Although Nexus 7 is still not available to consumers, the lucky developers who got the device at Google I/O 2012, are also getting the Android 4.1.1 update. This update also brings the tablet to JRO03C build. The update size is 12.6MB.
In terms of the changes, this update brings offline voice recognition, Google Now, improved text input and UI improvements.
Android 4.1 aka Jelly Bean was officially announced last month along with Nexus 7 and Nexus Q devices. Not a huge upgrade over Ice Cream Sandwich, it aims to make the user interface more fluid and bring Google search's knowledge graph functionality to voice search in Android.