Everyone is slipping these days. Looks like the Rebate guys over at T-Mobile were a little quick to jump the gun and information on the Sidekick iD’s release date, rebate amount, and available colors slipped out. The rebate will be $50, the release date looks like April 18th, and you’ll have your choice of blue, pink, or yellow at first. From what we hear the colors will actually be changeable, so no need to buy all three to match your outfits. They’ll be like the bumpers were on the Sidekick IIs. With the already low price and the rebate, these are almost like disposable Sidekicks, handy for the situations where you wouldn’t want to take your several hundred dollar Sidekick 3.