I'm not sure if anyone know the answer, but I have a 2010 Mac Mini server that I want to upgrade to Lion when it comes out. The thing is, I don't need any of the server functionality and am hoping I will be able to upgrade to Lion client. I know from reading the forums, that changing the mini server over to the client version of Snow Leopard was not a simple process. I am hoping that it will be easier with Lion. When Lion comes out, I want to format my drives, change my RAID and install the client version. Is that going to be possible without jumping through hoops?