Notch made specific promises that have been broken. And as far as what I am "entitled to", Mojang are in violation of their own Terms of Service by not providing me with a download of the version as-is when I paid for it. So what am I entitled to for my $15? Look, I understand some people are happy to throw away $15 and have Mojang do whatever they want. I think they have an ethical problem when they make promises but don't deliver upon them (such as SMP being ready before Beta), and furthermore generally treat their users with contempt.