So much for waiting until May to get your hands on some glowing, Nooky goodness. Barnes & Noble let us know today that the admittedly somewhat clunkily named Nook Simple Touch with GlowLight is slipping out ahead of schedule. The light up e-reader starts shipping this week for those who've already pre-ordered a unit and will continue to ship throughout the month. Apparently in-store units will be a bit fewer and further between, however -- the company announced that the device will be available in "limited quantities" when it hits stores early next month. So, if you don't want to make your mom cry this Mother's Day, the company's recommending that you jump on the pre-order bandwagon soonish. Of course, it couldn't hurt to give our review a peek first, just to make sure.