
It costs 350 Stone to build instead of 650, but has worse stats overall. The Krepost is a Unique "Mini-Castle" the Bulgarians can build.The hosts did confirm that the Dismounted Konnik also becomes Elite, but their stats are unknown. I do not know the stats of the Elite Konnik. The Dismounted Konnik has 45 HP, 12 Attack and 0/0 Armour. It costs 60 Food, 70 Gold and has 110 HP, 12 Attack and 2/1 Armour. The Bulgarian Unique Unit is the Konnik, which is a unique Cavalry unit, similar to a Knight, that becomes a weaker Infantry unit once it "dies".(Screenshot by Darkemeraldplay from AoE2 Reddit) The Bulgarians were also showcased, but only a small part of their Tech Tree was shown.Here are a couple more things from the 2nd Gameplay Twitch cast of Definitive Edition on EscapeAoE. Not sure exactly how much though, but it was something the hosts talked about during the game. Unrelated to here, but something interesting to note is that Watch Towers now have less HP in the Feudal Age.
AGE OF EMPIRES GOLD EDITION TECH TREE FREE
Tracking is now completely free and applied automatically in the Feudal Age, similar to how Cartography works now.

You might have noticed the lack of the "Tracking" Technology in the Barracks.It is unknown what civilizations get this unit besides the Tatars. I do not know it's other attributes, such as attack or movement speed.
AGE OF EMPIRES GOLD EDITION TECH TREE UPGRADE
It does have an Elite Upgrade which gives it +20 HP and +2 Attack. The Steppe Lancer has 60 HP, 10 Attack and 0/1 Armour. It costs 80 Food, 30 Gold and is basically a Light Cavalry with 1 Tile Range, just like Kamayuks for the Incas. The Steppe Lancer is a new "Regional" unit like the Eagle Warriors and Battle Elephants.The technology costs 150 Food & 100 Gold. Supplies is a new technology that reduces the food cost of the Swordsmen line by 15 Food, making the total cost 45 Food, 20 Gold.


It is unknown how Cliffs are affected though,
