Yeah, they aren't, but they were the sole reason for reasonable fans to buy their singles.
They'll definitely release a greatest hits with B-sides though, but there aren't any original B-sides at all at the moment with No Line, and there weren't many off the last two records either. Big Girls are Best, Always, Neon Lights (and I'm being generous here, as with the predictable inclusion of "I believe in Father Christmas", and maybe "Tower of Song" from "I'm Your Man" the Leonard Cohen tribute...) Are You Gonna Wait Forever (this sounds like a nineties leftover, that shouldn't have been found) and that's all, I guess... Nothing like Achtung Baby or The Joshua Tree, or even Rattle and Hum...
The rest are remixes and some boring live versions (nobody mention the extended solo- version of Kite, it wasn't a really good solo to begin with, Edge is better than that) which won't really matter much, 'cause there are numerous official live DVD's and also Youtube to archive proshot live TV appearances, not to mention good quality fan videos from the 360° tour.
I know this was off topic, by the way, but I had to opine.