Sony is getting ready to release a brand new upgrade to their UX line of Ultra Mobile PCs. This new model, the UX490, will physically resemble the current line of UX models, (doesn’t every UX?) but should sport a slew of new features and upgrades. The handheld computer will ship with a copy of Windows Vista Business, and sport a 1.2 GHz Intel Core 2 Solo processor. The UX490 will have a 48 GB solid state flash drive and should have two batteries shipped in the box. Sony is also bundling the unit with a Bluetooth GPS receiver at no extra cost. Could this be the mobile navigator we’ve all been looking for? Maybe, but it’s still a bit too large to be a handheld solution, and with Cingular AT&T EDGE, we’re a little disappointed. We so would have jumped on this if they had a UMTS/HSDPA model. That said, we’re certainly a fan of Sony’s slide out keyboard form factor, and we all can expect to pay $2,499 starting next week.