There are very few true outtakes from the Revolver sessions available away from whats on Anthology 2, i think its only some monitor mixes of Here, There and Everywhere and For No One and a couple of alternate mixes - there is one mix of Yellow Submarine which has a difference brass band solo which is pretty cool.
The Get Back sessions are more long rehearsals as they work thru each song from the beginning working thru different ideas with harmonies, instruments, solo's, arrangements etc. The problem is that so much of it is unfocused and rambling.
...