As of April 20 (that's today) the G-Slate is available from T-Mobile for $529 with a two-year agreement and after a $100 rebate.  The G-Slate packs a Tegra 2 CPU, an 8.9 inch screen, 32 GB of internal storage and has the ability to play and record video in 3D.  T-Mobile also reminds us that the G-Slate "wins hands down on price and network speed" when compared to the competition when comparably spec'd. 

Online ordering should be available soon, and once stores open in the morning the G-Slate should be on the shelves.  Will it live up to the hype?  That's the real question.  Discuss it in the forums.  [T-Mobile]