Hi Greet,
Take a peek over at
http://tfspreview.com, the online / public cloud hosted Team Foundation Service. This is currently only available as a free preview, but will have paid subscription offerings shortly. Microsoft has been pushing the notion of TFS as a service since /Build last year.
It provides work and bug tracking, source control, remote build, test management (the tests are run locally however). By connecting you're Azure website to the TFS project you able to publish source modifications, MS is calling this 'Continious Build'. All the stuff you get with Team Foundation Server, minus the reporting and sharepoint facilities. Within Visual Studio you use Team Explorer to connect to the hosted service the same as on the on premises server or TFS Express. I haven't used but there's a plug in for Eclipse, even Xcode and GIT get some connection loving.
The hosted version allows Microsoft to offer updates and enhancements more frequently and removes a significant infrastructure burden on users. I am quite a fan of this service, and recommend that you have a look at it. Microsoft has said that they will be offering a free version when the preview is over.
I'm probably highlighting my ignorance of the current EA, as I haven't had an opportunity to use EA for a couple years. I'm assuming a user can establish a connection with an on-premises Visual Studio 2012 Team Foundation Server from within the EA application or via the VS MDG integration addin. ( your comment referencing TFS 2008 implies I'm correct in that respect ). I can't really see any difference between a local server and remote, in either case we communicating over a http link.
I expect we'll have to wait until Sparx release a new build before we can inter-operate with VS2012. I do not have enough experience of EA and TFS to judge regard EA moving to TFS 2010 to 2012. I imagine moving from one version of TFS to another is less problematic for EA than moving from VS 2010 IDE to 2012.
Perhaps it's time to think about evaluating EA again ;-)
Kevin [smiley=2vrolijk_08.gif]