According to an individual on the call, one of the highlights from the call relates to the 2170 battery cell.
Reddit user electric musk attempts to convey the information from the call, but notes the audio was a bit rough at this point. This is what electric musk recalls from the call:
"he (Elon Musk) definitely said the phrase "transition by end of year". 2170 talk was just prior…talking about improved chemistry/geometry, active/passive content. but there were some decent gaps in the audio / muffled noise. maybe something else was mentioned regarding the transition. but i've always assumed all models switch to 2170 eventually. just timing a question."
We all had assumed the switch to 2170 cells would occur, but now it seems we've got a more concrete timeline for the changeover.