If you look at the RSD list, you will find that a good number of the titles are re-releases, or live versions that sometimes can be found elsewhere. Sometimes artists do first run and those may or may not be special editions. This particular U2 release is a new picture disc that the songs have never been on. The bigger picture is that things released on RSD are to support locally owned record stores. So think of it not as what U2 are doing for you, but as what they (and you, if you choose to buy it) are doing for small business record stores.