Since I purchased the original Airwrap in 2018, I have been hoping for an OVAL brush attachment. I know manu others have been inquiring too. Any plans for this style attachment to become available? Especially need one that is sized for mid length hair rather than a very large brush that is too large like the original offered by a competitor.
Heya! OMG, you are not alone!!
Did you see the latest accessory launch? Introducing the NEW Dyson Airwrap Diffuser & Large round volumising brush attachments | Dyson Community
The large round volumizing brush looks like a Winner in my eyes! 
No news on when it will be on sale, but sooo glad that it is coming soon!