You are going to be waiting a while. If I'm recalling correctly the only
tablets that might be free software compatible with those specs are with an
Intel mobile chipset. Not any of the tablet chipsets. This means the battery
life isn't great.
Additionally there is work on a 7" tablet by people who also care about free
software. They haven't got it to a point where it is really free though. The
first version won't be 100% or mostly free even.
They have gotten some of the drivers free'd though for the tablet that
weren't prior.
