I am not sure where you got the impression that 6.7 U2 doesn't support Hybrid configurations, there are an abundance of HDDs supported for vSAN 6.7 U2:
That being said, I see only All-Flash systems for 6.7 U2 Dell+HPE ReadyNodes currently - thee are Hybrid ReadyNodes from other vendors though.
thanks for replay.
I forgot in my post: I´m looking for an HPE Solution...
In that case contact HPE about whether they are aiming to get any Hybrid ReadyNodes certified for 6.7 U2 and timelines.
Or you could build your own using HPE components on the vSAN HCL.