As Ubuntu gets more attention in the general media (which is a very good thing), people get more questions they'd like to get answers to. For instance, HUD is going to attract a lot of curiosity.
Questions of that kind will not be useful forever, but they can be quite important in the interim. The media, as we know, tend to not always present the absolute truths. I think it would be good if we could use AskUbuntu to answer some of those questions in order to stop the misconceptions before they become widely accepted.
I would therefore suggest using tags such as future-1204 that can be used to identify these types of questions. That way, we can easily manage them when the future becomes present.
I really don't like the notion that when users are enthusiastic about the future and comes to us in order to learn, that we turn them away by saying it's off-topic and closing the question. In fact, I think it's the opposite of what we should do. We should welcome the enthusiasts and use AskUbuntu to spread high quality information about what's going on in the development scene. That way, when a news site presents incorrect information, people can link to a question on AskUbuntu to clear it up.