If you recall, about a month ago Sprint tweeted that it was working on delivering Android 2.1 upgrade for its HTC Hero and Samsung Moment in early Q2 this year. An optimistic guess would be April, right? Funnily enough, Techie Buzz has heard that two eager customers managed to squeeze a more precise date out of Sprint over a phone call -- end of March or even March 26th. Don't go reaching for that champagne just yet, though -- a self-proclaimed Sprint employee shared a recent internal memo on XDA-Developers forum, revealing that it's "actively working on having the Android 2.1 platform available to our Hero and Moment customers over the coming weeks," and that "more information coming in April." Oh Sprint, you do love playing with our little minds, don't you?