It sounds like Tesla was able to leverage the improvements to regen in the development of Track Mode to its regular Model 3 vehicle firmware.
Tesla wrote in the release notes of its new 2018.42 v9 software update:
“Model 3 regenerative breaking force has been increased to improve the driving experience and increase how much energy is actively returned to the battery when slowing down.”
According to sources familiar with the update, Tesla started pushing the update earlier this week to the first owners outside the early access program.
Read more at Elektrek.
Earlier in The Brake Report: