New in the sense that neither Deadpool or the members of the Suicide Squad had appeared in and carried a movie prior to 2016. The same way that Ant-Man and Guardians of the Galaxy were new IPs prior to their solo movies.I don't think Deadpool or SS count as "new". Deadpool is a sassy X-Men spin-off (and Ryan Reynolds even played Wade Wilson before, in Wolverine Origins), and Suicide Squad was basically hyped as "meet the new Joker and his super hot crazy girlfriend" in a continuation of the Batman v Superman world.