The Achtung Baby Outtakes are very much a "live" recording, so basically, it was the working demos, meaning that nothing was edited down, just roughly mixed for listening at a later time to "preserve" the good stuff.
I am sure that U2 have probably 50 hours of music recorded during the last 2 1/2 years. Most of it rewrites, improvs, jams, etc. Thats what the songs are born out of.
As for Achtung/Zooropa, yeah ideally I'd love to see that happen, but I think thats ideally what they wanted to do right after Elevation, go right back in the studio and record. Well, they did and it didn't turn out that way, even after Adam had said they had an albums worth of material ready to go. Basically meaning that at least a skeleton of 10 or 12 songs was left over from the ATYCLB sessions.
I wouldn't get my hopes up for it, it's taken over 2 years just to take the leftovers from ATYCLB, rewrite them, write and record additional music and they are still only now "apparently" mixing.
At this point I am hoping for more than 11 tracks on the album and at least 3 or 4 B-sides. Keeping with U2 and their recent history.
I'd bet we get about 15 songs for this album (B-sides included). And if the boys could just relax and trust their audience, then we might get another 'Zooropa-like album' in 2 years. Hopefully, but not likely.
Here's to hoping they just put the fucking album out in the next 6 months.