T-Mobile is preparing to debut the Dell Streak 7 tablet through a 30 second promo video recently posted on its YouTube page. We remind you that this is an Android 4G slate, that packs a Gorilla Glass display and is the bigger brother of the 5 inch Dell Streak launched in 2010.

This may not be an Android 3.0 device, but it’s surely promising, with its dual core NVIDIA Tegra 2 processor and full support for Adobe Flash Player 10.1 The new Dell product is capable of peak speeds of 21Mbps and we’d very much like to test that against the LTE capabilities of the Motorola XOOM on Verizon.

Dell Streak 7 runs Android 2.2 and incorporates a 7 inch WVGA touchscreen display.