Looks like they are moving more titles into ebook at Berkley.  Just found Hunters: Heart and Soul in ebook at a couple of online ebook retailers.

So if you’re an ebook reader and haven’t read Heart and Soul, here’s your chance.

Diesel Ebooks (I think they’ve got some sort of rebate program)

All Romance Ebooks (Not sure but I think they have a rebate thing, too~also, it’s not showing up on the site yet, but I got an email from them, so they should have it up soon)

Kindle (not live yet but it will be soon)

Sony Ebookstore (for sony readers)

Fictionwise (they have the micropay rebates…not too sure what they are, though)