WEll, that is good news. I still wonder how this came about to be realized. I dont think take2 knows anything about a linux client for prey, much less gave the green light to go ahead with it.
They'll know about it, they just might not have had a say in the matter. It all depends on the contract Human Head Studios signed (and it looks like a windows only contract as they have different publishers for both the 360 and mac versions).