Ayyash whats your opinion about ERA on Samsam, Are they new?
It's not new as of this year, but it was first shown last year during army day. In fact, you took a picture of it!
One thing I did notice though was that the ERA on the glacis is mounted on RHA(?) plates attached the glacis which should actually provide improved protection beyond the ERA alone.
Based on an extremely limited knowledge of the science behind ERA, I'd wager that the reason why Iran is developing these extra-thick ERA arrays to defeat APFSDSs by using the metal sheets (aka flyer plates) embedded in the explosive to shear the penetrator when it impacts the brick. Logically, the thicker the brick is, the more space can be positioned between the flyer plates, and in turn, the more penetrator can be sheared off. That's just a wild guess though.