Clearly my information of a few days ago was outdated. Tesla/Panasonic are currently adding 3 new battery lines (not 1) which will take them to 35GWh . . . but the new target appears to be 150GWh of battery production. That's a 750% increase on their current output. This would obviously be for cars as well as Powerwalls & Powerpacks which are currently "battery starved."
Musk has pushed this operation along at an astonishing pace without decent revenue. Now that he's got seriously increasing revenue . . . who knows.