IGN has been updated with a Universe at War: Earth Assault preview, going hands-on with the PC version of this sci-fi strategy game.

Petroglyph's upcoming real-time strategy game Universe at War: Earth Assault will support cross-platform multiplayer gaming between Xbox 360 and PC, publisher Sega announced today. Universe at War is the first strategy game to have such functionality announced, with Petroglyph and Sega the first third-party developers to support the feature through Microsoft's Xbox Live and Games for Windows Live services.

With Universe at War set to ship for PC later this year and the Xbox 360 version not set to debut until the first quarter of 2008, PC gamers will have a leg up on their console counterparts in terms of experience with the game, but Sega is promising an equal playing field on the technical side--a tall... Read more

Also at GameSpot this evening is the second Universe at War: Earth Assault development diary. Creative director Adam Isgreen writes about the singleplayer and multiplayer modes found in this sci-fi strategy game.

GameSpy and Kotaku both have new previews of Universe at War: Earth Assault, offering impressions of the Petroglyph developed strategy game that Sega will be publishing.

IGN and GameSpot have new Universe at War: Earth Assault previews, offering their thoughts on the strategy game after checking it out at a Sega press event.

Here are ten new screenshots from Universe at War: Earth Assault, the new sci-fi strategy game from Star Wars: Empire at War developer Petroglyph Games. Universe at War: Earth Assault is due out later this year for PC, with an Xbox 360 version to follow in Q1 2008.

Computer & Video Games has the latest Universe at War: Earth Assault preview, taking a brief look at the new sci-fi strategy game from the developers of Star Wars: Empire at War.

IGN has a new Universe at War: Earth Assault preview (which they call an Exclusive, so I'm sure we'll see other sites posting their previews soon), visiting the Petroglyph offices to check out the new strategy game from the Star Wars: Empire at War developer. New screenshots are included.

IGN has a Universe at War: Earth Assault faction preview up, taking a look at the heroes of the alien Hierarchy race.

GameReplays.org has been updated with a Universe at War: Earth Assault preview, recounting a trip to the Petroglyph offices to check out this new strategy game. Update: Novus faction impressions are available now as well.

Computer & Video Games has posted the PC Zone preview of Universe at War: Earth Assault, checking out the new scifi strategy game from Star Wars: Empire at War developer Petroglyph.

Over at GameSpot you can find the first Universe at War: Earth Assault development diary. This opening installment is about the creation of the alien faction called the Hierarchy.

There's a Universe at War: Earth Assault preview on 1UP, checking out the new strategy game from Star Wars: Empire at War developer Petroglyph.

There's a Universe at War: Earth Assault preview on Computer & Video Games, reprinting a PC Zone magazine article on the new strategy game from Star Wars Empire at War developer Petroglyph.

Exclusive First Universe at War: Earth Assault Details is an IGN article unveiling a new unimaginatively titled strategy game in development at Petroglyph, the studio behind last year's Star Wars: Empire at War. The game, set on Earth in 2012, has humans facing an invading alien race known as the Hierarchy. Unable to fend off the Hierachy on their own, human will receive help though other factions arent't being mentioned just yet. Like Empire at War, Earth Assault will feature a persistent universe.

IGNPC: Is it centered on several planets or just Earth? What's so special about Earth anyway? Are humans part of the big war or just drawn into the fight?
Ted Morris: Just Earth for now - but as Adam mentioned, the war has been raging for centuries on a variety of planets. The full title of the game is "Universe at War: Earth Assault," and it is here that the various races collide - with humans caught squarely in the middle. In the grand scheme, Earth really isn't any more special than the other worlds that have been "harvested" by the Alien Hierarchy. What makes it special to us is that we live here! Humans can't even begin to compete on the level of destruction that occurs in the game. After being initially drawn into the fight, it becomes quickly obvious that humanity, as a race, is pretty much screwed. So, while humans do play a role in the game, most of the ones you see will be running for their lives. There are a few notable exceptions that play a critical role in the story campaign however.

Update: here is the official press release from SEGA announcing the game, which is set to ship later this year.