The Firearms Blog alleges that Glock is on the verge of releasing a factory deuce-deuce.
If they stick to their numbering conventions and the rimfire is the next new model released, it will be the Glock 40.
So the Glock 40 will be a .22 and the Glock 22 is a .40. Hilarity ensues at gun shop counters across the country.
In other Glock news, the reason for the Fourth Gen Glock becomes apparent: Expired patents. (H/T to Unc.)