I haven't seen specific accessories for 2021 yet. Been going through accessory purchases and here are some quick differences I found.
- Hitch is different - there is 1 less bolt. Stealth Hitches is aware of it, but might want to wait till January before buying a hitch
- Frunk is slightly smaller because of the heat pump. haven't found matt that fits yet. Trunk seems to be the same size
- Air filter opening by the frunk is different
- haven't found center console organizer yet. think it would be difficult being the 2 USBC are so low inside the console.
- haven't verified the cup holders are same size.
Re: point 2, Tesla now sell a Frunk mat for the 'beaded frunk floor', which fits perfectly in the 2021. I bought it.
Re: point 4, I'm also on the lookout for a 2021 compatible centre console organiser. Waiting for the aftermarket Co's to catch up!
Re: point 5, The cup holders are the same size.