Also it's been confirmed as well simone resta has left and is heading back to Ferrari (no idea how long tbh).
Resta was the main designer for the 2017, 2018 and 2019 ferraris. Also interesting is that Rory byrne rumoured to be involved in this year's car apparently.
Edit - resta quit due to falling out with gene. Not 100% confirmed he is heading back to Ferrari as Audi is interested in him (although it would be funny if he reunites with binotto as they apparently hate each other)