4 weeks to several months. https://www.theverge.com/2018/10/21/18005782/audis-e-tron-suv-delayed-regulatory-approval-software-update#comments
My reading of that, is a core piece of software is still in a beta state and hasn’t passed internal and external quality assurance testing.
Only a few days left in March. https://insideevs.com/audi-e-tron-electric-suv-reservations-soar-to-20000/
My Audi dealer in Northern Colorado today sent an invite for a presentation of the Audi etron on April 2nd at their store ... Too bad that I will not be in town that day