When HTC and o2 make it available you'll be able to download it. We won't get it when Google first release it for nexus devices. I think HTC said at some point that they will aim to release it within 3 months of receiving the final code from Google so that probably means late January for unlocked phones then carrier branded will be sometime after that. Sigh.
I gave up my nexus 5 for the one m8 and I do prefer the HTC but am tempted to go back to the nexus to try out lollipop!
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