CUDA toolkit 4.0 RC into Repository, under root/files directory. It contains:
new linux driver (32 & 64 bits);
bunch of .txt's and .pdf's explaining releases and news;
Apart from linux drivers (which has both versions), It was added only 32 bit versions of cuda toolkit and cuda sdk, and even cuda toolkit it's only for ubuntu. if you need to other platforms or operating systems, feel free to ask. it's available for all of them. This is so, because it is an exaustive work to put all possible files in svn.