Awesome updates! I'm kind of sad I no longer work at IOA or live in FL! The next two years are going to be so exciting for Universal!! Plus Seaworld, and Im sure Disney will have something up it's sleeve.
That has to be what the Dragons sign is for. It looks like the entrance of Dragons will be up almost where the castle is now when the construction is done. So once they start ripping up the rest of the Lost Continent, the lower Dragons queue, and everything in front of the ride (Hopefully not the statues!!) they'll reroute the queue across the old bridge?! Is that where the sign is?
Sadly the line will still be close to the same length from there!