Strangely their web-site doesn't list confirmed acts, you've got to hunt through the News Articles and facebook to get a definite list so far

Confirmed so far (both does unless listed otherwise) :
BBMF (Spitfire/Hurricane/Lanc) - Saturday only
BBMF Lancaster - Sunday only
RAF Typhoon
RAF Falcons
RAF Tutor
RAFAT Red Arrows - Sunday only
Mig-15
Yak-3
BAF F-16
Royal Navy / Royal Marines Role Demonstration - Saturday only