If you're a heavy Facebook user and looking to do some beta testing, it's time to fire up the BlackBerry Beta Zone app. A new version of Facebook for BlackBerry has now arrived and is ready for download. According to the change log, this release (v10.4.30.6) focuses up 'many newsfeed improvements' and has 'multiple bug fixes', which all sounds very promising. It doesn't appear to be showing however if you have BlackBerry 10.3.1 installed, so keep that in mind if you do not see it. You might need to roll back to an 'official' OS release.