Garth was mentioned very quickly in the first issue of Red Hood and the Outlaws by Roy trying to jog Kori's memory. He also mentioned Dick, Lilith, Gar, and Vic. That interesting considering that in the New 52 Cyborg was Justice League from the start, and there was never a Teen Titans for all of them to be members of before.
A lot of the early premises changed. The New 52 Titans were supposed to be the latest incarnation of the team. Now they are the only Titans. In interviews Scott Lobdell stated that Superboy was the original (cloned) who had just been missing for 6 months. Tim Drake was still a former Robin instead of having been only Red Robin.