An issue regarding armour upgrades

[tudor93]

Hi, the second armour upgrade for the Kevan Rus Palace Guard is 'Late Lamellar' but my latest smiths can only upgrade to 'Heavy Lamellar'. What's up with this ? How can I upgrade their armour ? And I think this tehnology (late lamellar) is already available because otherwise in the description it would say something like "Next armour upgrade: improved metallurgy".
It's somewhere around year 1265.

[PapaRosario]

Late Lamellar becomes available with the Plate Armorer, which should be available in 1380.

Also, I'm not sure why you think it would say Improved Metallurgy for the next armor upgrade if it's not available yet. Improved Metallurgy is a later armor upgrade, but there are many different late armor upgrades.

[Ichon]

There are several armor upgrades and some like improved metallurgy reflect not a new armor but simple advances in making stronger/better metal which would improve even older styles of armor like mail or scale. Heavy lamellar is just a thicker lamellar which comes with a bit more heat penalty but improved protection. I don't think even on latest RC 2.0 there is any speed loss.