For people with time to read during christmas
You gotta be joking, read enough over the year!
Look forward to a few days away from it all...
Changes are basically in LMP1 and LMP2, e.g. "...to prevent entrants wasting money attempting to lighten their cars their weight has been increased by 50 kilos"
So those who did do their homework can put those kilos where they want it, and the others keep it where it's needed