Yes the big gapling hole that was the lack of web access for TFS from Microsoft themselves has finally been filled by BillG getting his cheque book out. Microsoft have purchased DevBiz solutions which are the makers of Team Plain, which is as far as I'm aware is the most comprehensive web interface to Team Foundation Server out there. The great thing about this is that Team Plain is now available for free for TFS customers.
You can checkout the announcement here: http://www.devbiz.com/acquisition.aspx
And download from here: http://www.devbiz.com/teamplain/webaccess/download.aspx