It would seem that some people called the early MSX prototypes a 416.... hence the confusion.
I know Racer magazine over here persisted in calling the MSX a 416 for months... even after the car was offically announced as it
No doubt there is a 416 in the works, somewhere. Will we see it before the worlds? I very much doubt it. Tamiya and HPI both proved last time out that taken a proven car to the worlds works best... just remember how AE (TC4) and Losi (JRXS) fared. Obviously there might well be some updates to the MSX before then... but a complete new car... nope (and why would they need to when the basic layout of the 415 has been going strong for 3 years now?)
Just my view...