Olympus Japan just issued a statement explaining that it will “pause” the E-M10II sales because of a manufacturing issue. There is yet only a Japanese press text that google translates as follow:

This time, in the digital single-lens camera “OM-D E-M10 Mark II”, in the case of installing a replacement lens of plastic mount on the camera body, we find that there are things the lock is easy to come off.

Now, so we have to consider the improvement, we will meanwhile, was temporarily suspended sales.

The timing of sales resume, we will again guide you in this site to aim the end of September.

Regarding already your response to this was customers who received your purchase, because the very trouble …. was a dedicated window below, we would appreciate your inquiry.

That I apologize the inconvenience to our customers, and apologize.