We got a call from DECC today about it (missed their call yesterday), whilst they won't put out an official statement about it, they believe that there may be some circumstances in which a few projects may just be viable in the 50k - 150k range though are not anticipating any at all bigger than that.
The notice went before parliament yesterday, parliament has 40 days to consider it then it just needs signing off by the Secretary of State, the SoS is not allowed to amend anything in it , the only thing he can do to stop it coming in is to not sign it (unlikely)
SO if you've got any in the pipeline they must be commissioned before the 1st August, plus the usual Roo-Fit conditions on eligibility date.