Digital Spy reports that a post-watershed spin-off of Primeval will begin filming in Vancouver in the winter, for a new series of 13 one-hour hour episodes.
Primeval Post-Watershed Spinoff to Film in Canada
Same story, from Sci-Fi Bulletin.
Space Orders Revamped Primeval
The series, to be called Primeval: New Order, will be co-produced by the Canadian SF channel Space, but you can read more about the details in the above article.
Looking forward to this, and will be interesting to see what folks have to say about this. :)