We knew Amazon Video on Demand was headed to Roku‘s media streamer ($99) early this year. And now, via their forums, we have word that the service has entered private beta. I had hoped Amazon VOD functionality was hidden within the recent 1.5 software update, however it’s rolled into a more significant 2.0 upgrade. Which potentially means a longer wait. Although, the refresh may also contain YouTube access. Look closely at the Amazon.com screengrab above for some (possible) visual confirmation. I can’t say YouTube excites me all that much. But combined with Netflix and Amazon, Roku’s negotiated quite the impressive trifecta for such a tiny, inexpensive box. But what I really want to know (still) is: Will Amazon VOD be offered in HD?