Second tweet link contains preliminary cover for the first novel.
ETA:
Apparently, they're publishing parts of the first vol in Da Vinci mag issues 11 and 12 (Oct and Nov 6th release) as part of a special. Comments on 2ch haven't been very revealing about any diffs between the original and the rewrite from what I saw, but I think most people are really waiting to see how things go from the second vol onwards. I know that's where I really started getting interested in the series. ^^;