Exile was remastered around 94 or 95. The remaster sounds great, a lot better than the original CD, but of course not as nice as the vinyl
My copy of Exile dates from 1994. It doesn't say whether it's a remaster or not.
From the booklet in my copy, bought in Canada in 1995 (1994 issue):
"Digitally remastered by Bob Ludwig for Gateway Mastering Studios. Remastered using UV22 Super CD encoding by Apogee Electronics, Santa Monica, California. Apogee UV22 is a unique new process capturing all the fine detail of the original analogue master on standard audio equipment."
This quote also appears on the back cover. I haven't checked any stores lately, but I assume that this issue is the one currently available. Additionally, this issue was the reprinted issue in standard CD jewel case that came out after the limited edition gatefold issue that was packaged in a clear plastic case. I have Black and Blue and It's Only Rock and Roll in that special packaging, and they also contain the same remastering credits, and they indicate that they were printed in the USA.