Nios II/f subscription Availability in 2025

Hello,

We have recently evaluated and purchased an IP core from a vendor. During evaluation we did not realize that it incorporates and requires a Nios II/f for which our Quartus Prime Pro 23.2 installation produces Time-Limited SOF files, as opposed to Nios II/e which is unlocked.

We would like to know if there is still any way to license Nios II/f, assuming we continue using an older Quartus version where it is still present (Quartus Prime Pro <= 23 I think).

If it is not possible to acquire the Nios II/f core, our IP purchase and several months of related HW design may be wasted.

Thanks,

Keegan