Looks like the Beta company is preparing for 2020 model launch. Here are some spy shots from Moto.it
What we see on first sight, are the plastics. New plastics for radiator shrouds, airbox cover, and rear fender.
Also a new fuel tank but lets hope there will be a bigger cap because the existing one is like a small bottle.
We see a new exhaust, and for sure is changed because of the new cylinder. The base seems to be smaller and more compact. Also, the frame seems to be changed in the central part of the bike.