Looks like our trips will overlap. I too was irrationally hoping that RoL might somehow open before our July trip. But, it seems all the rumors are for an opening more around September. I've given up hoping it'll be up for our trip in 2 weeks. Given the technical problems they've had with other openings recently, I doubt they will roll it out during the heaviest travel season, anyway - better to debut it in low-crowd September (assuming it's ready by then) to work out any kinks, so that it could be run more regularly in the higher-attendance Fall/Christmas seasons.
I haven't heard much about the Jungle Book filler since the early reports, but it didn't sound as though there was much that could be improved on as for the show itself. I expect some of the issues regarding lines and loading the theater will have improved by now, but as for the show itself, I think it is what it is. It would be hard to change too much on the fly, anyway. I'm going into it thinking of it more like a show you'd stop to see in the parks during the day, rather than something you plan your trip around at night. We are still holding a dinner package, but might end up just cancelling it. Maybe even skipping AK at night entirely.