If you’re the owner of a Samsung Focus, HTC Surround, or LG Quantum, and are still feeling a little dejected by our last NoDo-update report, cheer up. It looks like the status of the first major Windows Phone update for AT&T users has been updated with a more specific time frame. Previously, the NoDo upgrade for the aforementioned trio of handsets was tagged listed as being in the “Testing” phase. Microsoft explains that in this stage, the code is “undergoing mobile operator network and quality tests” — a software update black hole, of sorts. Recently, Microsoft amended its official Windows Update page to let AT&T Windows Phone users know that the three handsets will likely exit testing in “early April 2011.” After the testing stage is complete, handsets move to the scheduling phase — which typically takes less than 10 business days — and after that, the update begins flowing to handsets. So cheer up AT&T Windows Phone users, your update is — fingers crossed — on the way.