in other words, with that and the right frontend, you can take Language X, compile to LLVM IR, and run it through the PTX backend to get CUDA.
however, in the grand scheme of things, this probably doesn't make GPU programming significantly easier to your average developer (as you still have to deal with big complicated parallel machines); what it really does is ease integration into various codebases in those different languages.
http://nvidianews.nvidia.com/Releases/NVIDIA-Contributes-CUD...
in other words, with that and the right frontend, you can take Language X, compile to LLVM IR, and run it through the PTX backend to get CUDA.
however, in the grand scheme of things, this probably doesn't make GPU programming significantly easier to your average developer (as you still have to deal with big complicated parallel machines); what it really does is ease integration into various codebases in those different languages.