Looking to spruce your lockscreen up a bit? The MIUI Team is bringing a new flavor to the lockscreen arena, simply called MiLocker.
MiLocker looks to compete with offerings such as WidgetLocker and GO Locker as your lockscreen replacement, and after spending just a few minutes with it, I can say that it's quite nice - enough so that it will most likely become my primary lockscreen replacement (at least for a while). There are already several nice themes to choose from, several of which either duplicate the Android 4.0 lockscreen or add additional functionality (like shortcuts to phone and messaging along with the camera and unlock features) to it.
MiLocker supports Android 2.3 devices only, and you can grab it for free from the Android Market.