Yep. Jessica Jones is next to film after Defenders. That was already confirmed. I'm not sure if Puinisher or Daredevil will be next and there's also the question of whether or not Luke Cage or Iron Fist will get a second season.
And then there are the Moon Knight, Thunderbolts, Blade and Ghost Rider rumors. Thunderbolts and Ghost Rider are probably the longest off since we're already getting a different Ghost Rider on Agents of SHIELD and the only T-Bolts that are currently in the MCU are Zemo, Shocker, Blizzard and Mister Hyde. Until we get Atlas, Songbird, Moonstone, Scorpion, Joystick, Fixer and Abe Jenkins in the MCU (and possibly also Jolt), we aren't getting T-Bolts.
So assuming that Luke Cage and Iron Fist both do well enough to merit second seasons and Marvel also want to develop Blade and Moon Knight, that could push Daredevil Season 3 even further back. In a worst case scenario where Marvel stick to two a year, we might be waiting until late 2019 for Season 3 to hit.