I just bought it and there are individual keys for each game (picture attached). I also bought the Humble Indie Re-Bundle 8 during the last round of daily sales, and those were also individual keys. Those are the only two re-bundles I've bought, though.

Yeah, I noticed it as I mentioned by my edit above. The original Humble Codemasters Bundle was just two Steam keys; one for each tier and I assumed that since the rebundle of Humble Deep Silver bundle didn't offer separate Steam keys that it would be the case for this one too. Humble Indie Bundle 8 did offer separate Steam keys in its original appearance.

Ah, okay, I parsed that as re-bundles in general usually offer one key per tier. Good to know that Humble separated out the keys this time around; makes me glad I missed it originally since I already have Overlord.

That's interesting because when I purchased the Deep Silver Re-Bundle during the Daily Flash sales, it still had games grouped together (see pic attached). It's nice to see they might be learning and improving things...

Edit: ninjad...