http://www.crash.net/wss/news/233954/1/fim-dorna-announce-new-world-supersport-300-championship.html?utm_source=rss&utm_medium=rss&utm_campaign=rss
Wanted to write the same topic :P ==> http://www.worldsbk.com/en/news/2016/new+champ+category
So... what about transforming CBR250R to CBR300R and add also another bikes? (Yamaha YZF-R3, KTM RC390, Kawasaki Ninja 300)
The intention to have a lower 250/300 class was known for a couple of years.
Maybe we see some race replicas in dealerships?
And we probably see riders who were not good enough for the Red Bull Rookies/Moto3.
from
https://gallery.mailchimp.com/828d05dc5f4c88573aeb98365/files/2017_Part_2.7_WorldSSP_300_provisional_technical_rules.pdf
For 2017 the following will be legal (this list can be amended at any time by the
Superbike Commission):
Honda CBR500R
Kawasaki Ninja 300 (EX300ADF)
Yamaha YZF-R3
KTM RC390