I've read from multiple sources the past few days that in September there will be an official announcement that the next Beatles Remix Deluxe Box Set album release will be Revolver with Giies Martin at the helm. 

yeah, that's where they get you, the bastards. I love hearing the demos, alternate versions, tracks that never made it onto the record, etc and have bought many new editions of old favourites just for that material - and will no doubt continue to do so!

I don't believe there are other albums done in that exact same series of bootlegs, but of course there are other Beatles bootlegs that focus on other albums. For example, I have another 4 CD bootleg set called 1965 Through A Cloud Of Smoke, which is full of outtakes from Help! and Rubber Soul.

Incidentally, the sound quality on these Beatles bootlegs is very good. They are basically of official release quality -- maybe just a touch lower, but certainly not lo-fi or poor quality. The quality of Beatles bootlegs took a quantum leap in 1989 and 1990 with the release of the Ultra Rare Trax series; these were really the first Beatles bootlegs with comparable sound quality to an official release. Those were sourced from cassette dubs that Apple employee John Barrett made in the early 80s direct from the Abbey Road mixing desks, so they are only one generation away from the mastertapes. As you can imagine, they sound really good.

I'll have to have a serious look for those Beatles bootlegs.

I agree on the Dylan Bootleg series too. I have most of the ones from the 1960s and 70s, but not much after that as my knowledge of Dylan's output becomes increasingly spotty over passing years.

Yes, I believe you are right. Carnival Of Light was mostly a Paul McCartney experiment but the Beatles have an agreement that there needs to be unanimous consent amongst the survivors and the other estate members as to what Beatle material gets released

No, there aren't any unused outtake songs from the Revolver sessions or any songs that were started in those sessions but held over for later albums. That's been known for sure since 1988, when Mark Lewisohn's The Complete Beatles Recording Sessions came out. The Beatles only worked on 16 songs during those sessions: the 14 that are found on the UK Revolver album and "Paperback Writer" and "Rain", which were released in May 1966 as a non-album single.

Looking online, there's quite a lot of duplication between this new Deluxe Edition and the bootlegs I've got, but the sound quality on the official release will of course be improved (though the bootlegs are very good quality anyway). These two discs of Revolver outtakes look interesting, but like many of these deluxe Beatles sets, its a shame we didn't get more stuff. This official release has 31 tracks of alternate takes -- a handful of which had already appeared on the Anthology 2 album in 1996 -- whereas the 4 CD bootleg set I have has a total of 125 tracks (although admittedly some of those tracks are monitor mixes, unused mono reference mixes, and isolated overdubs, rather than actual outtake recordings).

That said, I'm very excited to see three outtake tracks from the "Love You To" sessions included on this new set: no outtake from those recording sessions has ever been leaked on a bootleg. In particular, I notice that Take 1 of "Love You To" is included, which Lewisohn described as featuring George Harrison on acoustic guitar and vocals, with harmonies by Paul McCartney -- so, no Indian instrumentation on it at all! I've been dying to hear that version since I first read Lewisohn's book back in the late '80s.

Also of interest are a couple of early takes of "I'm Only Sleeping", take 2 of "Eleanor Rigby", a 'songwriting work tape' of "Yellow Submarine", and take 6 of "Here, There And Everywhere", none of which have ever been bootlegged before.

John Lennon's acoustic home demo of "She Said She Said" is also included and, while that has appeared on various bootlegs since the early '90s, the sound quality has always been pretty lousy. So, hopefully the version here will be sourced from the original first generation reel-to-reel tape.