Recently, Steve McClure, bored of running laps on Mecca (F8b+) during training sessions, linked Ben's Roof (Font 7c+/F8b route grade) into Evolution (F8c/8c+). He then linked Andy Harris' new Font 7b+/7c traverse into Staminaband, which he thinks is harder than any of the previous link ups. So that will be F9a+?
There's still plenty to go at, with a new, desperately thin high traverse between Pump up the Power and Out of my Tree. Perhaps the ultimate link up will be The Harris Traverse, Staminband, high traverse into Out of my Tree, finishing up Boot Boys... F9b?