I say just the acoustic! The way I see it, the band thought of releasing an EP instead of releasing singles with new b-sides. So Lost! single had lots of different versions of Lost. VLV had different versions of VLVs and one version had the Death Will Never Conquer which we already downloaded for free. Violet Hill had A Spell A Rebel Yell so that was ok. And i assume this version will have the normal LiJ version and the acoustic.
in the past with singles they used to give out 2 or 3 new b sides. This time b-sides were limited in order to produce the Prospekt's March Ep i think
and it's a good idea. A lot of people don't buy the singles. I don't! But with an EP being released, I'm sure there will be a much larger response. And I'm also sure they will extend the 250,000 quota!