Google Nexus 6-7

Apple may have revealed fresh details on the Apple Watch and rolled out iOS 8.2 on Monday, but Google isn't sitting still either. The company just announced that it's now rolling out Android 5.1 Lollipop. It features several new features, including official support for multiple SIM cards, high definition voice calling on phones that support that feature, device protection and more.

Device protection will allow you to completely lock down your device so that, should you lose it and someone finds it, that person won't be able to reset the device and use it as their own. Instead, the device will be completely locked to your Google account. "This feature will be available on most Android phones and tablets shipped with Android 5.1 in addition to Nexus 6 and Nexus 9," Google explained.

Also, depending on the device hardware, Android 5.1 Lollipop now natively supports HD voice calls. In the U.S., that means even clearer phone calls for Nexus 6 users on Verizon and T-Mobile.

Google didn't specifically say which devices will see the update first, though we suspect it's going to crop up on the Nexus 5, Nexus 6 and Nexus 9 first.