While at the Television Critic's Association today, head of Netflix content Ted Sarandos told the audience, including Variety's Laura Prudom, that Marvel's Jessica Jones will debut by the end of 2015 and that ideally there would be a new Marvel series every six months. Once all four of the series have been launched, they will crossover in the Defenders, but some series will have multiple seasons before that happens as is the case with Marvel's Daredevil.

Also there appeared to be a quick glimpse of Krysten Ritter as Jessica Jones in the sizzle reel. Hopefully Netflix will release that to the internet soon.

Sarandos on Marvel's #Netflix shows: Ideally "every six months, you'll get a new season or series from #TheDefenders group" #TCA15 — Laura Prudom (@LauInLA) July 28, 2015

Once all four Marvel Netflix shows have been launched, they'll cross over for Defenders, but "some will selectively have multiple seasons" — Laura Prudom (@LauInLA) July 28, 2015

We got the briefest brief hint of #JessicaJones in the Netflix sizzle reel; Krysten Ritter walking down a street, opening a door. That's it! — Laura Prudom (@LauInLA) July 28, 2015