Github will cement proof of intent, I would provide it before the ICO IMO.
This is actually one of the best things I have seen posted here. Yes lets wait to see what the Github has. The team says its been developing for many months. These tops investors are supporting Qtum for a reason. Lets see when it comes out.
They do not want to show the code, covering fact that they are afraid that someone will make clone their project. Although, I think there is completely different reason.