Most of the DNN3 modules will work with DNN 4, as the framework currently does not use any ASP.Net 2 specific fduntionality - but you will have to check the author's web page for each module, to get exact information about compatibility.

All core modules have been tested with DNN 3 and DNN 4.

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Cheers from Germany,
Sebastian Leupold

   

Speed up your DNN Websites with TurboDNN

Perhaps one of the devs can give us an idea of when this will be though, I would really appreciate a list as well. My problem is really that I develop a site for friends, but it's a zero-budget project. A list with working and free  (DNN4) modules would be great help. Since I am too newbie with DNN myself I cannot really compile that list, the chance of IUP (incompatible user problems) would be too great....