Grimm: Scoop on the possibility of Nick's mother returning from TVLine's Matt Webb Mitovich

Here's some scoop on Grimm from TVLine's Matt Webb Mitovich's weekly column Matt's Inside Line for the week of 3/21/13. 

Do you have any news on when Nick’s mother (played by Mary Elizabeth Mastrantonio) will show back up on Grimm? –Amanda
I do not — and apparently I am in the best of company in that respect. “Truth be told, we have absolutely no idea,” the NBC drama’s producers say in a statement to Inside Line. “Hopefully next season!!”

Link to the full article:Supernatural, Smash, Grimm Spoilers — Once Upon a Time, Grey’s Anatomy - TVLine