Quote from Kotaku -
" The adorable Norns return as Belgian development studio Fishing Cactus announces Creatures 4, the first new entry in the popular artificial life simulator series since 1999. The free-to-play game will be available this winter for iOS devices, PC and Mac."
Quote from TouchArcade -
"Artificial-life geeks rejoice: a new entry to the Creatures series is finally underway, and it's coming to iOS.
Details are still pretty light, but it looks like Creatures 4 is going to be free to play. It's slated to be released later this year on iPhone, iPod Touch and iPad, as well as PC and Mac. It's being developed by Fishing Cactus, a Belgian development studio with quite a few solid titles under their belts."
And here's a much longer passage from a site called Gamasutra about the licencing of Creatures 4 - Click Here!