My s7 edge got the update this morning. Same version as the screenshot. I don't have a pay icon.
Also, my understanding is the s2 requires new firmware to work with pay, so have you checked if there's a firmware update for your s2?
I'll be honest, I'm not sure how to check for a firmware. Is it via this screen? Or is that just for the phone app? If it is as below then I've tried it and nothing..
Watch firmware reports as R732XXU2EPK5
An Italian site is suggesting a new firmware has been released there R732XXU2EQJ2
Link below, though change log doesn't mention SPay.