Tank on photo is t-72 upgrade, even if deep one(new cast turret).
Btw, main sight has little to do with t-90, iirc it's local development of Slovenian FCS.
Also, let me be frank: Iranians tried so many times to fool everyone with their wooden(plastic, paper, sheet metal) "models", built around something old and working, what i believe in their new stuff only when it's known to be in service. Their recent example of "stealth fighter" is a good example, why.
Also, sometimes Iranians show such new developments, what...well
Cuban level from 30 years ago reached. Nothing to be proud of, though.
Btw, there is one good indication: except for allies with little choice(Houthi, for example) few Iranian weapons beyond small arms make it anywhere.
NK weapon export is a well known fact, and it includes things like independently developed manpads, ATGMs, tank FCS, ASCMs and more.