Vista hasn't even completely made it out the door yet, but Microsoft looks to already be hard at work on the inevitable first service pack, code named "Fiji," sending out a call for testers in hopes of rolling out the upgrade by the end of the year. As rumored the first time we got wind of the Fiji moniker, the upgrade will apparently add a number of features to Vista that had to be axed in order to meet this month's launch date, as well as address various "high impact" issues, although Microsoft doesn't seem to be willing to elaborate on exactly what those issues might be or how high their impactedness may rank. Of course, all this pales in comparison to rumored changes coming in that other exotically-named Vista upgrade supposedly in the works, with Vienna promising to turn the OS on its head, doing away with that pesky compatibility for "all applications" and throwing everyone for a loop with a completely new interface. No word yet on a possible service pack for it.

[Via The Inquirer]