Someone recently hinted that the 1.5 alpha-test branch was imminent; has it happened yet, or when will it (likely) happen if not? And is there a (preliminary) list of features that 1.5 will have? (I was just about to upgrade my system from 1.4 to 1.4.2, but if 1.5-alpha is within a week or so I might as well go with that.)