In fact, the T-Mobile G2 can no longer be found on T-Mobile's website, and can't be ordered online anymore. It's still available in (some) stores, but all signs now point to a slow phasing out of this handset, especially now that the G2x has launched (although it's still not in stock).
It's unclear how long the G2 will continue to be available in Tmo stores, so if you've always wanted one, but never got round to actually buying it, perhaps you should head to the nearest magenta store in your area and seal that deal – if you keep waiting, it may be too late.
Of course, even a few months may pass before the device is fully ‘end-of-lifed', but why risk it?
source: Unwired View