Now that the old Danger-powered Sidekicks have had their death warrants signed, T-Mobile's gearing up to carry the Sidekick brand -- which it, not Microsoft, owns -- onward and upward. We've already seen a supposed Android-powered model sourced from Samsung in the wild, and the carrier is finally fessing up to its existence -- sort of. Though Sammy isn't mentioned, a new teaser page on T-Mobile's site says that "a 4G Sidekick powered by Android" is "coming soon," offering visitors to submit their contact details to find out more. On the s
