If they ever intended on releasing any more Anthology style CD's, they'd have done it by now. I don't think there's much more they can do without repeating themselves.
As for Carnival Of Light, I'm sure I remember reading that it was slated for the Anthology series, but was unanimously vetoed! The only other thing of interest I can think of is the fabled 27 minute 'Yer Blues'. I've yet to read about or meet anybody who's actually heard this!
I'd like to see a good live compilation. There must be an awful lot that they can do with the tapes now, that they couldn't do years ago. And a complete Rooftop concert.
Neil Aspinal publicly stated earlier this year that the remasters were done. It's just a question of when to release them. They'll let Love on it's own for a few months, so my prediction is for around April for the first 2 or 3 cd's. Culminating at Xmas with the Let It Be DVD. You know how Apple likes an anniversary: 20 years since the cd's were first issued.