No details on what the demo contains or when it should actually be released is mentioned. This could after all be a hoax and EA is yet to offer comment.
Even if it is true what platforms will it release for? Unknown. The thread over on the official BioWare forum has been closed for users going off topic. Dragon Age 2 releases on Xbox 360, PS3 and PC March 11th in Europe.
The red lettering in the Danish EA newsletter translates to 'demo out now'.