I'm sure the Rally Team is working on the routes for the 2018 Rally.
But, we are a year away, so it will be some time until the routes are published.
NOTE: I'm not involved in that. Have no idea of their plans.
But {besides great roads} there is a lot to see and do in and near Kerrville.
Here are some random thoughts for; while your there. {or on your ride to/from Kerrville}
It might be a good option to take a swimsuit with you.
A trip to canoe or float down the Guadalupe River at New Braunsfield could be an option.
The Schlitterbahm Water Park is there too. hint hint
Garner State park, (w/river swimming) is in the area.
San Antonio, with the Alamo and the River Walk is relatively close too.
I've never done the River Walk, but I've heard of great restaurant's there too.
Ya'll have heard of Lukenbach Texas with "Wallin, Willey, and the boys".. It's not far from the rally.
If you go thru there, you could stop and see the {air conditioned} Nimitz Museum in Fredericksburg.
Kerrville itself is an interesting little town, and also has a lot of BBQ joints and great Mexican food places!
Every time I do the Hill country I ride to Llano to eat at Coopers BBQ.
I'm sure I will be going to Cooper's at least once. I highly recommend Coopers!
Ride safe, Ted