According to a screenshot of the internal product page for the G2, it appears as if it will be ready to pre-order starting tomorrow, with shipment and availability beginning on October 6th. The pre-order process, available only to existing customers for now, will run until the 4th of October.
T-Mobile employees may also pre-order the much hyped device starting tonight at midnight, however, no word yet on how many will be initially available.
The internal site reads:
From September 24 through October 4, existing T-Mobile customers will be given the exclusive opportunity to pre-order the T-Mobile G2 with Google at select T-Mobile retail stores, through Care upgrades, and online at http://G2.t-mobile.com. A limited number of G2 smartphones will also be available for employees to pre-order on My T-Mobile.
The G2 is scheduled to be available to all customers at select T-Mobile retail stores, Care upgrades, select retail partner locations and online on October 6.
The G2 is the successor to the insanely popular first Android phone the G1. Bringing features such as HSPA+, 5-megapixel camera, Android 2.2, Qualcomm MSM 7230 clocked at 800 MHz, GPS, and Bluetooth, the G2 already seems to be a very powerful upgrade.