UPDATE: Sorry folks, the WSCCI sprint is invite-only.
Also, space is limited, so please let us know in the comments or on Twitter (@DrupalATX) if you plan on attending.
We're going to be sprinting on the Friday before DrupalCamp Austin 2011! The two sprint topics of the day will be the WSCC Initiative (WSCCI, pronounced "whiskey") and Mobile improvements/modules for Drupal 7 and 8 (see rupl's comment below).
Note: You do not need to be registered for DrupalCamp Austin if to attend this sprint.
When: Friday, 11/18. 9am-5pm
Where: Four Kitchens office
Address: 3415 Greystone Dr Ste 210, Austin, TX 78731
The WSCCI sprint in invite-only, but if you would like to work on mobile improvements for Drupal 7 and 8, Chris Ruppel (Four Kitchens) will be leading that effort.
See Chris' comment below for specific goals/tasks for the mobile sprint.

Comments
It's a date!
It's a date!
We can do any Mobile
If D8 mobile core sounds more glamorous than D7 mobile contrib, that's great too! There's plenty to do, so all sprinters welcome. Here is a list of stuff that needs some love:
D7 Contrib
D8 Mobile Initiative
Edit: I recently promoted respond.js project from sandbox. Updated link.
Sounds like fun
I'd like to help out with the mobile sprint.
Clarifying
The WSCCI sprint is not a public sprint; it's a focused, specifically targeted sprint on the plugin system. Sorry folks, this isn't a good place for drop-ins. :-(