Replace HW NI 9151 CRio

Hello , NI announced that the cRio Expansion chassis Nl 9151 is going outdated on 31.12.2021 this year.

I am searching for a Pin compatible successor HW for the NI-9151 cRio Expansion chassis. 

Can anybody of you give me some good advice and does the successor HW know?

Thanks a lot for your help