Sideloaders rejoice! Another leaked version of the Android runtime has turned up in the CrackBerry forums and as expected, this one removed the perma-bar from Android apps. With this installed you'll now have the option to show or hide the navigation bar which is awesome news.
Aside from that it does sound like it speeds things up a tiny bit and offers better performance, but we wouldn't expect too much else.
This one is available for all BlackBerry 10 devices running OS 10.2 and the only catch is that you'll need to use the debug token method for any sideloaded apps. If you're ready to give it a go, head to the forums for more details and download links.