There are a boatload of lock screens out there. Seemingly every version of Android comes out with a new one or at least a modified version of an older one. Then there are the OEM lock screens found on TouchWiz and the HTC Sense. On top of that, there are a plethora of third party lock screens—most of which can emulate all of the aforementioned lock screens. Now, those running ICS and JB can mimic the Blackberry 10 lock screen.
It doesn’t have a lot of functionality, but it certainly looks nice. XDA Senior Member evilisto released the mod for the Galaxy Nexus, but says the patch should work on any ICS and JB AOSP ROM. ICS is currently untested, though.
If you have the Galaxy Nexus, there is a nice, easy flashable zip you can download that’ll get you the Blackberry 10 lock screen. Everyone else must apply the patch manually until flashable zips can be made. Thankfully, no one will be going at it blind, as evilisto has also released a simple guide to follow to get the patches installed. Once done, you’ll have what looks like the Blackberry 10 lock screen.