I've been following Deskmag for some time and really enjoy their workspace coverage. While they have a lot of information on coworking, they also cover the broader new workspace market.
They describe themselves as:
... the magazine about the new places we work, how they look, how they function, how they could be improved and how we work in them. We especially focus on workspaces which are home to the new breed of independent workers, such as coworking spaces, private shared studios and executive offices.
At Emergent Research almost all our work is global. One notable exception - at least so far - is our U.S. focused coworking research. Because of this, I really appreciate Deskmag's coverage of European workspaces.