I agree, what comes across in all the interviews surrounding this is that he just wanted to get them out there. Now. As a little group by themselves and not as a "Look at all the different things/styles I do" album, since many of the songs seem to have their roots in one and the same night at the piano. Hence also no tour; I think I remember him saying something along the lines of "I haven't really thought this through beyond recording it".
If Neil were into gimmicks, he'd be more into the promotion aspect of his work in general, I think. Which he hasn't been in the past.