Sidecars will return to the TT next year after they were suspended at this year's event.
Two races will be held next year and they'll consist of two laps rather than three.
The bikes will use new production-based engines, including the Yamaha R7 and Aprilia RS 660.
It aims to make the racing safer, fairer and more sustainable.
Work on dangerous trees to continue this evening
Flamingo chicks hatch at Curraghs Wildlife Park
People living in Britain have until Thursday to apply for a postal vote
Possible delays as first sewage plant rotor heads to Peel
Could you take the chilli-eating contest crown this weekend?
Smartmeter considerations included data protection and security
Former Island resident pips Fury family to award
Children's flu vaccine forms must be in this week