A new promo image is making the rounds:
Kid Flash isn't pictured, although he's been mentioned next season. A few more Titans from the comics are present (Red Star, Argent, Pantha, Herald).
The most interesting one is Jericho. In the comic, he's the son of Slade (Deathstroke). He joins the Titans and eventually gets killed. Slade blames the Titans and this is what originally started his vendetta against the team.