My suspicion is that an EP is the way for the rest of the band to test the waters of working with Dave. I think if, when they're making this EP (if it happens), they're all completely comfortable, it'll morph from an EP and into an album, but, if they're not comfortable, they'll still release it anyway to both get a little bit of money, get back into the routine of the four of them working together, and then make an album without Dave. So, by saying it's going to be an EP, they're not over-committing to something they're not 100% confident in.
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