Since there's actually some concrete evidence of what he's asking about, and the question is very specifically targeted ("is this UI here announced?") I'm not opposed to it at all. Salesforce releases and announces so many things keeping track of them all and what details are public is incredibly challenging.
Anything that doesn't have this same level of targeted question about the future should really be closed as overly broad ("what's coming in winter 14?").
So I'd say normal question rules apply: if it's broad or speculative it should be closed under existing rules.