Oh, hey! It’s the SE TM506, that pretty little green 3G flip we mentioned a few weeks back. Last anybody knew, it was set to launch sometime in early September – turns out, that meant today.

You can nab T-mobile’s first HSDPA handset at any of the normal T-Mo outlets for a cent short of $80 after a 2-year blood pact and a $50 dollar rebate. If you’re itchin’ for more, check out the full specs after the jump.

• Weight: 3.4 ounces, including battery (approx.)
• Size: 3.7 x 1.9 x 0.69 inches (approx.)
• Talk Time: Up to 9.5 hours GSM; up to 3.5 hours UMTS (approx.)
• Standby Time: Up to 250 hours GSM, up to 250 hours UMTS (approx.)
• 2.0 Megapixel Camera
• Media Center
• aGPS Built-in
• TeleNav® Navigator
• RSS Feeds
• MyFaves-enabled
• Audio Postcard
• Quicksend
• Mobile Backup (T-Mobile Address Book)
• Bluetooth® 2.0 / A2DP / Stereo streaming
• Tri-Band GSM (850/1800/1900)
• Dual-Band UMTS (1700/2100 & 2100)
• GSM/GRPS/EDGE/UMTS/HSDPA