It looks like the new Sidekick ID will come in a variety of colors, but it also appears that the SK ID will lack some of the functionality of the more advanced SideKick 3. Let's call it an entry-level SideKick, but hey, it still has that cool flip screen and QWERTY keyboard that made the device famous. The info was uncovered from a T-Mobile rebate form found on T-Mobile's website. It's said that the Sidekick ID will also have a $50 mail-in-rebate that brings the cost of the device down to $100. An April 18 release date is expected, but let's wait for the official Sidekick ID announcement.