I swear Apple knows when I leave town and only releases updates then.
Anyhow, vacation ends tomorrow, I have updated the driver page with the new 10.11.3 and the 10.11.4 Beta drivers.
I don't see a 10.10.5 Security Update driver yet, but hopefully tomorrow?
Best to wait for it if you need it. If one still isn't out when I get back tomorrow I will try the usual tricks with older driver.