Same length just thicker. From what i can tell anyway.
That's not good for me because I use the thin Mylar bags for my CGC books and they barely fit in there very snugly. I don't know if they will fit the new case.
Anyway I know that you don't really need archival storage for a plastic CGC case, that is already archival itself, but I just like the clear quality of the thin Mylar bags vs, poly, which seem to yellow with age and aren't as clear to begin with.
I can't remember where I bought my Mylar CGC bags...probably off ebay. I have about 70 left but I"m sure will use them up over time as I buy books with the older cases (which is 99.9% of them right now). I'm sure someone will make the mylar bags for new cases, if they haven't already...if the old ones don't fit.