An open source coin is attractive because it has nothing to hide. Everything is transparent. If you release its binary version only, you have a problem. If you are a government, I trust in you. If you are a person whom I don't meet each other once in my life, why do I need to believe in you.
Belief is a big issue in releasing a cryptocoin.
This forum is becoming messy and noisy because it is unmoderated. Anyone can create a coin and post an announcement.
If I am a moderator of this forum, I will divide it into 2 forums.
+ Certified altcoin which discusses about the first truly innovative coins: PPCoin, NetCoin, LiteCoin ... Innovators are appreciated
+ Experimental altcoin which discusses about the others: copy-cats will be discussed here and they will never become a mainstream ones. Copiers are un-appreciated
Just because it's open source doesn't mean it isn't proprietary. The virtue of open source is a double edged sword since anyone is free to modify and mimic the product for themselves, so that uniqueness and originality are valuable commodities for developers. This is their idea. It will be released as their own. And the source will be released when the time is right, I'm sure. Thus, transparency will follow accordingly, once they get the notoriety they deserve from said launch. Delaying the release of the source is the right move and I would do the same for my own launch.
Don't forget, this is Taco's brainchild, not mine and if his reputation doesn't speak for itself, I don't know what will. However, as I have mentioned, the source will only be delayed until everything possible bug/issue is worked out. Once the crypto has established itself as a viable option, the data will be released accordingly.