This year instead of Sims camp they had pre-release versions of Eco Lifestyle that they were able to access for a short time back in mid May. At that point a couple of them (note - I only watch a couple) were pointing out some bugs and errors. In a few cases those were fixed by the release date, in others I've seen James specifically take note of some things that hadn't changed. So they did (and typically do) have time to provide feedback to the devs but whether that's acted on or not is out of their control. (And they also did get the full release a couple of days early to be able to do what amounts to free advertising.)