Whois registry info is sometimes a great way to find out about gadgets that aren’t released yet. We did some poking around and discovered that T-Mobile has registered a new domain related to the sidekick, sidekickslide.com. They registered it on May 31st, 2007 as indicated by the whois information. Sometimes companies will register domain names that are similar to existing products just to prevent other people from using them. But this domain is something completely different than any of the other Sidekick devices, so we’re guessing the name of the next Sidekick is going to be the Slide.

Could this be the Zante that we uncovered earlier through Flickr? Or maybe the Sidekick X? Why the name “Slide”? We’re guessing it has something to do with the way the screen opens. Danger may be putting out a device that doesn’t have the familiar flip in attempt for something new. The patent filings from years ago have a phone design that has a screen that slides up rather than flips out. Besides, with the (horrible) Helio Ocean release, everyone’s talking about sliders these days. And we’re also willing to bet that this is new hardware made by Motorola based on the timing and the leaked Powerpoint slide.

We don’t have any release date on this device yet, but if T-Mobile is registering a domain then chances are it’s coming soon. Besides, with the iPhone slated to come out in 2 weeks, T-Mobile is going to need something new on the market to compete. We’re just hoping it’s better than the Slide click.