The only thing that surprised me about this news is that Just Add Water were involved in it - I've heard Maxis say that Oddworld Inhabitants have been working on something for a little while, but I wasn't expecting an announcement like this to surface for another couple of months, at least.
The only piece of concerning news, for me, is that whole "your favourite Oddworld characters" part. I realise that people want to see the quintology be completed and whatnot, but I really enjoy Oddworld as a world and an atmospheric backdrop to whatever story Oddworld Inhabitants want to throw at me.
Although I adore characters like Abe, Stranger and V.P Aslik, I really just want to see Oddworld Inhabitants go as crazy as possible with new creatures, settings and characters because the way they design them is amazing. I can't help but feel that the quintology might limit the creativity of Oddworld Inhabitants - I think it could be argued that Munch's Oddyssey wasn't very good for that reason.
I'm probably taking this a bit too seriously for my own good, but I'm really not dying to see the quintology complete. I just want to see more of Oddworld.