So which is it?
Daniel Finkelstein reports that Steve Hilton was at a party at 10pm last night. As Daniel writes:
There is an inverse relationship between how late the leader's team finish his speech and its quality.
Last year David Cameron's speech wasn't finished until just before he gave it. And you could tell.
...The earliest sign that this year may be better? Steve Hilton was to be found at a party at 10pm, calmly sipping a soft drink. Benedict Brogan says, however, that the speech is awful and that Mr C is going to wing it.
There's not necessarily an inconsistency: it's possible that, as Benedict Brogan puts it:Mr Cameron looked at it [the speech] this morning, chucked it in the bin and announced he'd busk it. Seatbelts on!
and that Steve Hilton knew it was rubbish and Mr C would indeed be winging it, so he might as well wander off to a party.
Or maybe Mr C is simply going to do his 2005 trick and recite it from memory, and the 'winging it' line is simply, well, a line.
My money's on the latter.
UPDATE: Benedict B has also suggested the latter.