Some rulings just got posted up on Twitter from people enquiring with Konami’s ruling helpdesk. We now know how Extra Deck Monsters summoned via effects will be handled!
Link Monsters, Link Summons and New Master Rule Explained – Preliminary VJump Information Updated New Master Rule changes with rulings on Pendulum Summons explained
The OCG Official Website has updated their site with visuals and more updates for the New Master Rule! Here is the translated article to go through all the changes! PS: Guess this article confirms that Pendulum Monsters pendulum summoned from the Extra Deck will go to the Extra