Right now, the Spring Value Bundle is only confirmed for select US stores. The Spring Value Bundle will include the Xbox 360 250GB S, a single wireless controller, and wired headset. In addition, it will come with digital download copies of Darksiders 2 and Batman: Arkham City, as well as a free month of Xbox Live Gold.
This is apparently the first Xbox 360 bundle that Microsoft has offered where both of the games are digital downloads. Of course, the fact that both of the included titles are digital downloads will eat into the available disk space on that new 250GB hard drive, so you will want to keep that in mind.