If this rumor is to believed it, it looks like Dash owners will enjoy another full month of exclusivity. Pocketnow is reporting that "an industry source" informed them that Cingular's Samsung Blackjack smartphone won't be receiving the Windows Mobile treatment until June. It's anyone's guess as to why the updates are taking so long, as the software has clearly been ready and available for quite some time now. Without, ah hem, pointing fingers, we can only assume that this is a carrier-side issue, as it's been clear from the jump that upgrade availability would depend entirely on the willingness, or lack thereof, of the Windows Mobile software. All we can do is hope that the delay means that Samsung is working hard to include a version of the uber-slick Carousel home screen interface that they're currently including on the European version of the i600...