As with any rumor, take the text below with a grain of salt, but according to a tipster (who has worked with us in the past), T-Mobile's rumored "Project Emerald" refers to a Sidekick-branded device that will be made by HTC.  It will offer Android 2.1, a 1 GHz processor (presumably Snapdragon), front-facing camera, 4.3-inch Super AMOLED display, 16 GB of onboard storage, and will be pre-loaded with the usual T-Mobile applications.  We're still working with the tipster to nail down a roundabout launch timeframe, but as of now, the device is expected in the "summer."

Though most will relate Sidekick to Danger and the existing product line, it's important to note that the name "Sidekick" is owned by T-Mobile.  Check out the statement below, which can be found at the bottom of most press releases:

"T-Mobile is a federally registered trademark of Deutsche Telekom AG. Sidekick is a federally registered trademark of T-Mobile USA, Inc. All other trademarks are the property of their respective owners."

Given what's going on in the Android space, it seems to make sense.  As soon as we receive additional information, we'll let you know!  Does the prospect of an HTC Sidekick device excite you?  Hit the comments!