New CCW-Friendly Glock on the Way?

Glock pistols are not very CCW-friendly.  The smallest (US-available) are the Glock 26 and 36, but both are still a little thick to be considered excellent carry pieces.  However, Glock recently teased an ad suggesting that the smallest Glock yet is on the way.  What is it?

http://www.thefirearmblog.com/blog/2013/11/24/glock-teasing-smaller-g42-pistol/