St Charles
Tesla, not TSLA!
If you are referring to the generations of batteries (-A, -B etc.) then it is most definitely a "thing". Tesla has been incrementally improving all aspects of the car (including the battery pack) over time, which is fine... unless you find yourself with older hardware on a newer car. For example, the first generation A-pack battery is limited to 90 kW Supercharging speed. Not a huge deal (to most) but Tesla had already moved on to B-packs in late 2012/early 2013. My early 2013 came with an A-pack while cars delivered before me were receiving B's, but I was pretty close to the time of the incremental improvement. A 2015 car with an A-pack sounds very suspect.
It's not the same thing directly, but it looks like the same thing happened. The difference here is that there really isn't a V1-V2-V3 P90DL. That was a construct of the 662HP thread and it is a very confusing way to describe what is happening. It directly leads to the confusion that we see here in this thread.