I am sorry to say that Version 3 of Hypercube source has been canceled.
My new mod Strider Mountain is taking up all my time now and after that I will be modding for Crysis. I most likely will make a cube mod for that among other mods for it.
Please dont be mad. Im not like a lot of other mods that never release anything. I have released a version that I am totally happy with and that is fully functional. Sorry that I couldn't continue it.
Check out www.stridermountain.com