Nice! Does this mean that we will now be able to easily create multiple viewports in our games, like that famous camera monitor thing that comes up now and again?
Also, to completely push my luck, any chance of implementing animated textures while you're working on this? I think there was talk of this at one point, back in the day. It could make animated buttons and also cooler effects like force fields, shields, etc. I think we can kind of hack this now and I believe the water uses it through a shader but a simple function or two would go a long way.