Many of these are available for play on the Virtual DnD Weekends ran by Baldman Games. WCAG is running Wild Coast on DICE online this weekend, and Iuzual is running Lordship of Isles online at the end of October. So although they premiere at in-person Cons and some specials may be that way only, most of the content is being offered online for those that want to play it and don't have the ability to go to an in-person Con. I'd say if you are curious, give it a try at one of their online offerings.
