Just got this letter from SPB:
"Sorry for not answering for quite a while, I've been EXTRA BUSY and then tried to be extra relaxed

At this point I have to stress that we haven't put the Shell 5.0 to market, just announced it to be able to show it in Barcelona and enter talks with prospective partners. I sincerely apologise if the press release was misleading, this is entirely my fault, and would not repeat in future. The offer to test MS in the end of the press-release is reffering to MS3.5.
About the release date - it is roughly June (not an official statement, can't quote me on that

)) as the software is pretty much in it's alfa state as of today. Our goal is to release it for all the announced platforms simultaneously, takes some extra work. Meanwhile, there's an option to enter the beta-testing program, we'll make a separate announcement when it starts.
Thank you for your patience and understanding."