Just looked into this a little more. All tyres are a step softer next year, meaning the new soft tyres are actually the old mediums. On top of that they've added the new hypersoft.
Tyre degradation is going to be the big thing next season, we might even see some 3 stop races.
They'll have to change the colour of the wet tyres too.
Wonder where they’ll use the superhards, I guess Spain