I swear I read somewhere that said all cards will be moving to the new style/design (business and plus) over the coming months.
Just takes some time.
I like the templates though, the hot coral mag stripe is a nice touch!
EDIT: found where I read it.
https://community.monzo.com/t/investor-card-refresh/65918/10?u=jackcrwhitney
https://community.monzo.com/t/investor-card-refresh/65918/16?u=jackcrwhitney
https://community.monzo.com/t/investor-card-refresh/65918/18?u=jackcrwhitney