If you were hoping for a full-fledged Raspberry Pi sequel this year, you'll have to keep waiting. Designer Eben Upton tells ZDNet that, while there should eventually be a replacement, he doesn't expect one in 2013. Both software tweaks and upgrades like the Model B are reportedly doing the job -- and it wouldn't be right to "orphan" the 700,000 existing owners with a new platform, Upton says. He isn't worried about the Cubieboard and other current rivals, as they have yet to be as fast as their raw numbers suggest. We