Your guess is as good as mine, but seeing some games are from 2015 and seem to be never bundled before doesn't make me think they will be in another bundle soon. Also they already sold >70k bundles, I guess it will not become any cheaper; but $0.60 per key, how much lower do you want it to be.. ;)

It's Sekai, not Artifex Mundi, so don't expect another bundle from them in a near future (and it would probably won't be the same games)

Better quality anime/manga related games are almost never bundled or in a good sale. If you want these, get them now.

Sekai Project is cheapskate, most of their games only sold on Steam, You might not be able to see it anywhere from retail store

I mean there is that guy who called me pedophile for enjoying those games ... so yeah ... weird world we live in .

It would lower it to the bundled rate (i.e. 15% of value). So, yes, your CV will change once the unbundled giveaways get bundled.

When it gets added to the bundle list, it should be with a starting date of June 6. Meaning every giveaway on or after June 6 will receive the bundle CV. So indeed, as thoughtfulhippo mentioned, your CV will change then.