I read 1 review on another site (He posted it on multiple sites, actually), and he was shooting +p rounds thru it and it broke. He sent it back and has gotten it back, and everything works fine.
I held one on Sunday - It was okay. But, I already have a Walther P99 compact, so I don't see the point of spending oodles more money on a gun that is the same size except for a tiny, tiny bit of width difference.
Walther makes some fantastic firearms. I don't know if there is any inherent design issues in this gun - it is too new to tell. But, many, many gun companies release new guns and then have some issues with them for a year or so. That's life, unfortunately.
So, don't discount Walther.