As reported in
Pentax Rumors
There's a list of stuff from an interview by Pentax with Nippon Camera magazine. The 645 highlights are these:
New Pentax 645 medium format camera is currently under consideration.
Ricoh has no plans to kill the 645 camera line.
645 lenses development is also still ongoing, but full-frame K-mount lenses have priority.
Some here will find their ways to accentuate the negative here. I will say that considering how tight lipped Pentax is, this is very positive news.
So, take it the way you want to. I welcome Japanese speakers' takes on the actual article, if they can find it.
EDIT: Just saw that this was posted in the news and rumors forum here 4 days ago. I missed it, so maybe all of you did too.