Same thing here. I did confirm the L+ Easter Egg was included in my update. I was able to successfully turn it on following the steps from the video. It is too wet for any full power launches at the moment, but I didn't really notice any change on the butt dyno. I also couldn't drive around waiting the 1+ hours for max battery power to be ready. May be that there is no difference until max battery power is fully available.
I also confirmed as was noted in the video that the additional diagnostic information isn't available until you hit max battery power. It never became available in the 25 or so minutes I drove the car today.