Don't count on open GPU drivers on this new Intel architecture. As its predecessors it uses a third party GPU provided by Imagination technologies (the same company responsible for the GPUs in N900,N950,N9 and many other devices). Concerning how open-source unfriendly Imagination is and what mess was the driver situation with Paulsbo (a prior Intel netbook/mobile architecture), it really doesn't look good - basically the same sitatation as with ARM - no problem using the CPU but no open GPU drivers. You can find more info to this issue in this slightly chaotic Phoronix article.