Aussies you hit it on the head.
Parts are not going to make you faster but practice, ability and knowledge.
No matter what chassis you have there will be upgrades, changes made especially after the worlds as guys get caught up in the hype.
TM have however remained fairly stable for a long while and it was bound to happen that they would make a big change to the platform.
Give a few weeks and Xray themselves will have something new just like there electric cars changed they will too.
Only brand i dont see making a change is Serpent as they going through a relocation to China.