A question nagging at the back of the fandom's mind ever since Barry Allen and Felicity Smoak kissed on an episode of The Flash is: Does Oliver Queen know?

Given the romantic subplot between the two that is driving so much of the non-costumed drama this season, it's not an unfair question to wonder whether her relationship with Barry might play a role in the way she and Oliver react and, therefore, how Arrow's season plays out...but it won't be on Arrow that Oliver finally hears about it.

Nope, it will be on the forthcoming Vixen animated series on CW Seed, set in the Arrowverse and featuring guest appearances by both Arrow and The Flash.

That's according to Marc Guggenheim, the Arrow writer/producer who will serve as showrunner on Vixen. He told Assignment X, "There’s actually a question I’ve been getting on Twitter a lot – is Oliver going to find out that Felicity kissed Barry? That’s actually going to happen in the VIXEN cartoon. So part of the fun is that close cohesion. And Vixen’s such a great character, because first of all, she represents magic, which is an area that we haven’t explored on either of the two shows as yet."

"One thing we’re always saying is, The Flash is very different from Arrow, Arrow is very different from The Flash. If Arrow is crime and The Flash is science, Arrow has a big magic component. The other thing is, it’s a strong African-American hero who’s, like I said, a former Justice Leaguer," Guggenheim added. "It’s set in Detroit as a nod toward the Justice League stories. It’s done with the same love of the source material that we bring to everything. Two of writers on the project, Keto Shimizu and Brian Ford Sullivan, are every bit as geeky as I am. So look for a lot of things hopefully you’ve come to know and love from The Flash and Arrow in Vixen. The Easter eggs, the winks, the nods and the cool action – one of the things we can do in animation is really push the envelope in a way that we can’t on either of the two shows. So there’s a much larger production value we’re taking advantage of [in] the animated form. That’s the other reason to do it."

The series is expected along in the fall on CW Seed.