If you go through the
Elemnt Firmware Update History, the big update came on April 15th, and they've basically been fixing stuff ever since. They've only added three functional elements since then, everything else, repairs to whatever they broke. I use TBT quite sparingly, so I never noticed any issues. I did notice that I just updated mine for the 3rd time this month.
I spent a year with a Hammerhead Karoo, which had the best hardware on the market, and software written by people who apparently don't know how to make anything work. Updates would utterly break the unit-- it would forget how to use sensors, randomly reboot, TBT would go absolutely berserk. The software battery management
still hasn't been sorted out-- I would have one ride at 6% use per hour, and a couple days later it would use 30% per hour. The Wahoo is incomparably stable.