Wow, exciting news! This is something I've longed for since I started buying eBooks. Amazon's selection of eBooks is without doubt among the best (if not the best) on the market, but I've never been a fan about their decision using the mobi format. Even though they offer reading apps to all major smartphone and computer OSes, Kindle is the only e-reader that have native support for mobi as far as I know.
I love my Kindle, but lately I've ended up buying ePub eBooks from other stores, removed the DRM, converted to mobi and finally transferred them to my Kindle. If Amazon decides to sell future eBooks in ePub format I'll be their most loyal customer ever
However, if they decide to go for the ePub standard, do you think Amazon will offer all books in ePub, or just selected ones?