This seemed like a good thread for this, so I will say there is definitely a lot of evidence as of late that characters certainly got aged up thanks to Infinite Frontier.

I mean lets look at the list real quick of some things that give the idea that characters are aged up now

-Gordon is back to being gray, revealing that he just did his hair. Barbara is at least late 20's or older right now as Oracle.
-Superman is getting a touch of gray in Superman and the Authority
-Katana has gray hair now in Next Batman
-Titans are all adult teachers
-Wally West is a dad and husband again
-Lian daughter of Roy Harper is now a teenager
-Damian is now 14
-Conner in Suicide Squad looks at least late teens early 20's