The article says they’re adapting to mirrorless cameras
> As reported by CineD, the new Air series of lenses is designed to cater to the growing number of filmmakers who are using compact, lightweight mirrorless bodies for high-end professional work.
> The IronGlass Air lenses move away from IronGlass’ standard PL-mount cinema design toward compact, mirrorless-friendly designs
For instance, Rokinon released a fantastic cinema lens line for consumer/prosumer cameras in the 2010’s, they were rehoused versions of their photo primes. They’re built entirely different.