For those who have already invested, this final bonus is bigger too: any new amount invested on or after 25th of November is eligible for the bonus of 65%, not 55%.
I think this sentence is a source of confusion. Do you mean that the 65% bonus only concerns old investors that would want to invest more after the 25
th or does it also concern new investors?
Yes, thats what it seems to mean, as an early stage ICO participant you'll get +65% for additional investments but keep in mind your earlier bonuses have been nullified by the 55% new investments bonus.