The cupcake is sure cute and all, but while still not dead, its moment must surely be winding down. Since pie has yet to catch on the way most foodie prognosticators said it would, it’s unlikely that it will fill the void in our post-cupcake future. Want to take guess at what will? We’re putting our money on doughnuts. With rumors of the SoloCook peeps testing recipes for their almost-ready Federal Doughnuts circulating just as Kripsy Kreme gears up to open its second Philly location near 16th and Chestnut tomorrow, it seems like the stars are lined up just right for it. And surely it’s only a matter ot time until someone rolls out a doughnut truck.