Sarah Chalke, who voices family matriarch Beth Smith on Rick and Morty, is back at work on the highly anticipated Season 4. While she didn’t reveal a release date for the latest new episodes, she did share an optimistic appraisal of the series’ future, confirming that Rick and Morty co-creators Dan Harmon and Justin Roiland have plenty of material for the new season.

“It’s coming,” Chalke told Entertainment Tonight Canada on Monday. “I cannot say when, we’re making them right now, though, and I’m excited for you guys to get to see them.”

Beth, Chalke’s character, became a bigger part of Rick and Morty in Season 3, which dealt with the aftermath of an alien invasion of Earth that resulted in her separation from husband Jerry (Chris Parnell). “The ABC’s of Beth” revealed that Chalke’s character has more in common with the anarchic genius Rick than she previously suspected. There was also some additional drama with a potential Beth clone, but we’ll wait for Season 4 to see if that ever comes up again. Differing somewhat from previous episodes, Season 3 of Rick and Morty expanded the show’s scope by taking the focus off of Rick and Morty and deepening our understanding of the other members of the Smith family.

“They’re like a bottomless supply, the two of them,” Chalke said, describing the working relationship between Harmon and Roiland. “That’s what’s been so fun about working on the show.”

Chalke’s description of Harmon and Roiland is more important for Rick and Morty than most shows, since they don’t just have to make Season 4 episodes, but also, eventually, fill their massive 70 episode renewal order.

While Chalke may not be able to reveal the release date for Rick and Morty Season 4 just yet, we think we have a good idea when it will happen anyway. While massively delayed by protracted negotiations with Adult Swim parent company Turner, progress on Season 4 has been brisk since Rick and Morty’s 70 episode renewal. If Rick and Morty is back to its previous pattern, then Season 4 could premiere as soon as July 28, since both previous seasons (excepting the Season 3 April 1 surprise premiere) had their release dates on the last Sunday in July.

Hoping for an earlier release date than July 28 probably isn’t fruitful. Should that prove too soon for the production, Rick and Morty Season 4 could deviate from its pattern and premiere sometime later in 2019.