Last night, drummer Mickey Hart shared the above photo on his Facebook page, with the cryptic caption “Men at work, searching for the grail.” The photo clearly shows Bob Weir and Steve Kimock with Hart, though what they’re up to is anyone’s guess. Interestingly, the top comment on the photo is from Bill Kreutzmann, who writes “Save me a seat, Mick!”

There is no word yet as to what this project may actually be, but if Hart and Weir are in the studio, and Kreutzmann is itching the join them, it may suggest that some new material is in the works from the post-Jerry Grateful Dead crew.

Regardless of what they’re working on, we’re happy to see half of the Core Four playing together. Considering Weir is signed up to perform with Billy & The Kids at Peach fest, the “Fare Thee Well” shows may have sparked some collaborative inspiration, and we’re certainly excited to hear what 2015 has in store.