It seems that new article on develop is talking about PSN Restrictions that were in place before for all other PSN games. They essentially were there preventing developers to push patches every day, but now with DUST - things are changing. You can expect during the beta almost at any time patch to drop and after the release itself if needed!
Sony worked with Dust 514 developer CCP to completely remove certain PSN policies for its upcoming free-to-play MMO shooter, the studio has revealed. Read more about it here.