We acquired a free "sampler" CD recently which contains five or six of the remastered songs -- one straight-acoustic selection from the early days, the rest rock-era classics. I might dig it out later and provide more specific info. Sounds GREAT, not surprisingly.
I might add that -- to me, anyway -- the early CD reissues of Dylan's classic vinyl LPS were TERRIBLE sound-wide, vastly inferior to the original records I knew so well. Whole instrumental tracks seemed to me to be missing from every song on "Blonde on Blonde," and the CD of "Hwy 61" was pretty bad, too. I quit buying any after being so disappointed with those two.
CDs were *supposed to* provide better sound than old-fashioned records, but that was not the case for a lot of reissues, including the Bob Dylan catalog.
These remasters not only restore all the original sound missing from the first-try CDs, they probably improve upon the originals, at least a little bit.