The closed beta for original Alpha purchases starts on the 23rd! To get your steam key just check your My Games section on the picroma site.
Sadly I never bought the alpha due to the DDoS attacks but I've played countless hours through a friends account. I'm looking forward to buying it the second it releases. I've been watching BdoubleO100's old series on youtube and even started playing a bit of the alpha to get up to speed with things again.