Talk about cutting it close. With less than 12 hours before T-Mobile officially pulls back the curtain on the ultra-hyped G1, the floodgates have opened. Images extracted from the depths of T-Mobile’s G1 site have begun hitting tip boxes, and now TmoNews has managed to get their hands on a bunch of specs and details.

What’s known so far:

• In-store, immediate sales only available in stores within 5 miles of a 3G covered area. If a store is beyond that range, representatives will walk customers through a T-mobile.com purchase
• One touch access to: Search, Maps, Gmail, Youtube, Calendar, and Google Talk
• Gmail account and data plan required
• GPS
• 3.1 mp camera, no video recording
• No stereo bluetooth (A2DP)
• Dimensions: 4.6 x 2.16 x 0.63 in
• Weighs 5.6 ounces
• 480×320 65K color screen
• 5 hour talk time, 130 hour standby time
• Expandable up to 8GB

We’ll update as more comes in and, of course, be covering tomorrow’s happenings as they go down. Three more product shots over at Mobile Crunch >>