“Nippon Camera” published their camera roadmap guess for 2013. It’s based on a mix of existing rumors and their own speculations. This is what they write about Panasonic and Olympus:
Olympus: E-P5 in April. E-M7 and E-7 in August.
Panasonic: GF7 in March, G7 in August, GX2 and GH5 by end of the year.
I think they may be right on the Olympus roadmap (and that wasn’t really a big secret). And also the Panasonic roadmap isn’t far away from what we already heard.