Check out @philippemaes on twitter, he is working on a app called Cal. Looks kind of like this. It's still in beta tho' but it got great potential!
Great live tile too!
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Yeah, after last update the app doesn't work at all. Can't even open the app, so I'm eagerly waiting for the updateOh it won't let me login into fb actually so I am waiting for today's update. Dev said that he will fix it tonight.