Google has begun rolling out a security update to LG Nexus 4 and Samsung Galaxy Nexus (GSM) smartphones running the latest Android 4.3 Jelly Bean software. The update is arriving over-the-air with the “JWR66Y” build number, and it is expected to address the latest Android security vulnerabilities.

Did you notice a nice performance improvement after installing the new Android 4.3 update on your Nexus devices? That’ll be partly due to the fact that Google finally introduced TRIM support in this release, allowing devices to recycle unused storage after apps and other content have been deleted from your device.

Is Google ready to give up on Android and make the Chrome platform its new priority? That’s the question posed by AppleInsider’s Daniel Eran Dilger in a new report that suggests the search giant is looking to distance itself from the world’s biggest mobile operating system and all of the intellectual property issues that come with it.

But I wouldn’t worry too much if I were you. Android’s not going anywhere.

Google unveiled its new Nexus 7 on Wednesday, and it’s set to be accompanied by a second-generation Samsung Nexus 10 “in the near future.” That’s according to The Wall Street Journal’s Amir Efrati, who got chatting to Android chief Sundar Pichai after the press event in San Francisco.

Google has today unveiled the Book Cover, its first official accessory for the Nexus 10. Priced at $29.99 and available on Google Play, the Book Cover clips into the back of the Nexus 10 and has a cover that folds over your display to protect it while it’s not in use.

Like the iPad’s Smart Cover, Google’s Book Cover automatically puts your Nexus 10 to sleep when you close it, then wakes it up again when you open it.