All this is a bit bullshit, there already was 25-year anniversary remastered by Chuck multi-channel SACD and DVD-A editions. So what could be new here ?
Keep in mind that SA-CD is bullshit. It adovcates two advantages over Redbook CD:
1) Hig-rez, 96/24 recordings; We now know that there is no audible difference with standard 44.1/16 CD.
2) Mutlichannel. The idea of "surround audio" may seem nice on paper; in practise, it is a very artificial and difficult exercice. Instruments are separated in a less-than-natural way, it takes very expensive speakers to be placed just in the right spot, and to sit in a very precise place, to take advantage of this. And above all, the music itself has to be recorded in a way were multi-channel brings musical value. This could be true of Dark Side of the Moon, where lots of sound effects (e.g. clocks noise in Time) can create an ambience. I have real doubts for Brothers in Arms. If this is to feel like "I sit on the drummer's naps", what is the point ?
As I always say: care for the mastering, not for the media. The media is almost always good, unless you go for low-rate (128kb/s) MP3. Mastering is everything. Better a good master recorded on a plain 2-channel CD than a shitty master recorded on a 5.1 SA-CD !!