Bundled in with the Bold 9700 leak we saw yesterday some keen eyes found a newer version of Facebook. The app currently sits at 188.8.131.52 in App World, but the included version in the leak is 184.108.40.206. This is only a few clicks up version-wise, but hopefully has some minor improvements or bug fixes from the official version. The guys at MyBBOTA were kind enough to throw up a link so everyone can try it out. Personally I've had quite a few issues with not receiving notifications through the app the last few weeks, so maybe this will fix up my issue.
As a word of caution, don't install this if you aren't running OS 6. We're not sure how stable the app itself is, so be sure to backup your device before you give it a go :-)