Doesn't look open source to me yet. The only things I can find are this announcement and a Surveymonkey page where would-be contributors can indicate what they think they could contribute to the project. I couldn't find any licensing information.

The URL also mentions "announces move to open source offers early access to developers".

From what I can read, this could mean a not too well executed 'real open source' release, a "let's try and find free developers by letting them work with the source, but not deploy it commercially", or anything in-between.