Windows 8 Preview Up For Download . Microsoft  has made its Windows 7 successor, Windows 8, available for preview and beta download. Microsoft showed the OS off at the Mobile World Congress today, and it looks like the company, like Apple  with Mountain Lion , is looking to even the differences between the interface on its mobile devices and PCs. --NS
Google's Doodle marks the leap year and the would-be 220th birthday of Italian composer Gioachino Rossini.
Marvel Sends 80 Graphic Novels To iBookstore . Iron Man, Wolverine, Spider-Man  and a band of other superheroes  are headed to the iBookstore . Comic kings Marvel, following on the heels of their iPad and iPhone apps, are releasing 80 graphic novels into Apple's e-book zone, and will be topping off the list with a few more titles every week. --NS
$35 Raspberry Pi Computer Goes On Sale . Raspberry Pi, that adorable, adorably cheap computing system conceived over beers  at a Cambridge pub, has gone on for sale for $35. It will be followed by a $25 model, which has gone into production. A flood of early orders has crashed the company's suppliers' websites. --NS
Microsoft And Nokia Collaborate On Maps . Microsoft  and Nokia, who are getting pallier by the day, just announced they're launching a unified map design adapted to smartphones . Nokia sees Microsoft's OS as a fresh start on the device front, while Microsoft is betting on Nokia's massive appeal in some parts of the world to give their Windows Phone OS a chance against  established smartphone rulers Android and iOS. --NS
--Updated 5:45 a.m. EST
Yesterday's Fast Feed : Apple Plans iPad Event For March 7, Google Offers Big Bucks For Chrome Hacks, Flipkart Launches Music Store Flyte , and more!