767-400 interiors were just renovated, and I don't believe there was even a medium term plan to park them.

767-300 however is likely the next to go.

I've heard multi-source rumblings about the 717, but they had just announced 10-year lease extensions not too many months ago. There has also been some wild speculation about the 777, with the drawback being SYD and JNB and the 350 with any cargo at all.