William Dunlop will ride in Superbike and Supersport classes for Chris Dowd. I think Yamaha for both. 



Anstey - Padgetts Honda



The General Lee Johnston - East Coast Racing/BMW S'bike & S'stock, pretty sure it'll be Triumph in 600.



Derek Magee - NW Racing BMW 


Dean Harrison - Silicone Racing Kawasaki (big classes) Not sure of his 600 machinery.