Yugioh-New gladiator beast Darius rulings?

People are telling me that Gladiator beast Darius rulings have changed. Is it true that if gladiator beast Darius is flipped face down, the monster that Darius summoned regain its effects? Will this still occur if compulsory evacuation device is used on darius?? And my final question is if you book of moon darius when it is Special summoning Gyzarus from the graveyard, will Gyzarus gain its effect to pop 2 cards???