Here is the latest (that I know of), taken directly from notes of the Tejas Miata Club May meeting of 5/15/2017:

● The Texas Roundup being hosted by Tejas Miata Club will be held Nov. 3rd - 5th.
● Planned scheduled will look something like this:
○ Thursday - early registration / check-in / self-guided tours / runs
○ Friday - Registration / Informal Runs / Movie at Blue Light Drive Inn
○ Saturday - SASCA AutoX / day runs / Dance Hall evening meal, dance,
awards
○ Sunday - Thank you and departing events (funtana event?)
● Volunteers needed. This is our event!

And more from that meeting:

The Holiday Inn Express is Buda is the official
Roundup hotel. There is
a block of rooms reserved. We will have AutoX event as part of the Roundup
hosted by SASCA. The Saturday night venue will be - Pinballz Kingdom - which
can accommodate lots of people and will host a dinner/party Saturday night.
Finally, we are planning numerous runs to give all attending members an
opportunity to go drive. We need ideas and volunteers. As the hosting club,
please help with the planning. Cost is currently working out to $70 - $75 a person
but still needs to be finalized before we open up the Roundup site for registration.