Yes the bluetooth is working just fine. So far only tested with my P900 and my Bluetooth GPS unit but it works fine with both. Will have an XDA 2 soon however I have read that ActiveSync will not work with it however that doesn’t bother me as I won’t be syncing that on the laptop I imagine.
The DVD writer is 2x, not 2.4x. 2.4x is for DVD+R discs. The Sony only burns DVD-R/RW disks. Just to let you know incase you go off buying the wrong media.
I also noticed today there is a firmware update for this writer on the Sony US site, no info on what it does but firmware updates for writers normally are to improve their compat with different media. So should be worth putting on.