As a Junior member you can update once per month, and you don't have access to a couple of tracks and cars. The full member can update every week, and has access to all the current cars and tracks. I'm not sure of the details.
Also certain levels can or can't access forums. I'm not 100% on the levels though.
Yes they are doing the Nurburgring, it's been confirmed. If they do end up with weather...I've challenged my buddy to a night time race in the rain...on the ring....