Not sure why everyone's so convinced that the last few tweets aren't him- true, there is a change in tone from the first couple, but I think it was pretty obvious this was at least partly a publicity thing for the new album from the start. Maybe he's just figured out what a useful tool Twitter can be for publicising stuff and getting information out there and is just capitalising on that. He's not above publicity and just because the last few have been mainly in that vein doesn't mean it's not really him. Plenty of people use Twitter the same way- partly comments and day to day thoughts, partly as a marketing tool. I don't see why people are not only jumping to conclusions about it, but being so bloody negative.