It looks like on the ludicrous ravens the power increase was to the rear motor. The max used to be 360kw, and now it's 375kw.
In this video from July, the front and rear power peak simultaneously at 177.5kw and 360kw at 82 mph(at 2:20 minutes). The peak battery power is 578.9kw. The run in the video was at 99% soc vs the 87% in this thread, which probably accounts for the slightly lower battery power. They are probably able to get the same power out of the front motor using less battery power on recent firmware. This lets them send more power to the rear motor for the same total battery power.
More power to the front motor might not help at low speed as the front wheel traction is reduced as the weight shifts to the rear wheels during hard acceleration.