When will the Surface RT 2 surface? (sorry)

I would like to replace my aging iPad 2 with something a bit more modern with an ARM chip. The Surface is stunning, but I can't buy a Tegra 3 device at this point. I mean are we looking at holiday season for Tegra 4? Microsoft will be behind forever with that schedule. I just want a few more hours of battery life and a 1080p screen for the Surface RT 2. What do you guys think?