Originally Posted by dguillaume
anyone know what is actually new? i've heard lots of rumors but nothing official?
OTASL/Wireless OS Upgrades is the big addition, although it is not currently available for any devices; expect software updates and/or a downloadable package add-ons for current OS 4.2.2 devices and it will be included in OS 4.3.0 (as an ALX/COD), when released (Pearl 2). Office 2007 XML-based file support (docx, xlsx, etc) is also included.
Aside from those two 'biggies', there are a lot of minor additions and functional changes. I'm ramping up for a huge BES upgrade, so this will be our target BES version.