Earlier this week a teaser leaked online, likely from next week’s Teen Titans Go! To The Movies Blu-ray and DVD release. The teaser is below:
As the teaser points out, the upcoming special(or event?) is titled Teen Titans Go! vs. Teen Titans. No plot details are currently known, which is to be expected. It is known that this will release in 2019, thanks to io9. More details are likely to be released soon as a result.