Some of those MySpace kids who keep a close eye on things have noticed that DJ AM has a “Private” event with T-Mobile on October 16th listed in his MySpace profile. DJ AM has played previous Sidekick release parties, including the Sidekick II and 3. There’s no information on whether this is for the Sidekick Slide or the Sidekick LX (or both) yet. Our first guess is that it’s for the Sidekick Slide. Our second guess is that it’s for both devices, and our third guess is that it’s for the Sidekick LX. The Sidekick Slide has been out and about being tested longer than the Sidekick LX, but who knows what decisions T-Mobile is making behind closed doors. Regardless, be on the lookout for at least one of the new devices in mid-October.