A new WebmasterWorld thread has new reports of German webmasters receiving fake emails from Google that their site has been penalized.
Just a reminder, we covered this news in the past and that these are fake. Google said they would no longer send out email notifications until they find a more verified manner to notify sites of penalties.
Again, these are fake emails and should not be considered valid. To see if you have a penalty, login to Google Webmaster Tools and if your site is verified, Google will tell you.
Forum discussion at WebmasterWorld.