Notice the bottom right of the picture a chariot or howdah type thing with a mounted bolt thrower.
Some of the leaked rule sets:
GENERAL SPECIAL RULES:
-NO ASF or Valor as we know it today.
-Elven Dexterity: units with this rule can use parry save when wielding any weapon, even if mounted (some units may use it against shooting or even if mounted).
-Special rule for rolling an additional dice on chase an remove the lowest result (or four dice removing two lowest dices to swift stride).
-IaC: more than f*cking around, there are chances that the general may somehow help, dependin on region/power chosen it benefits some units.
SPECIAL RULES ON WEAPONRY:
-Elven Weapons: no penalties on two-handed or moving&shooting (there may exist extra bonus on elite units). (Translator says: in the beginning I thought of SW, but maybe maidens are also here).
-Ithilmar armor: no penalties when moving, +1AS on heavy armor (only on elite units).
-Dragon Armor: 3+ armor save against flaming attacks.
-Lion Pelt: Can also be used in CC.
MAGIC SPECIAL RULES:
-Elven Mages: +1 to dispel and can repeat channelings.
-High Magic: More powerful spells and representing the 8 lores of magic. It is said that there is one that gives life back to a dead character and other one specific against Chaos and "Bad" armies. They will be the most powerful sorcerers until Lizards get renewed after summer. Some rules will be shared with them.
SPECIFIC RULES ON UNITS:
-Martial Prowess: Elves fight and shoot with a extra rank (not specified, but this could be armywide).
-Spears and LSG: heavy armor and shield option.
-Archers: Light Armor.
-SHs: Heavy armor. Cheaper.
-Ellyrian Reavers: Same.
-T-Chariot: Same, cheaper.
-SMs: Parry save against shooting, Swords of Hoeth, Paths fighting.
-White Lions: Lumber Axes, Stubborn, Forest Stride.
-Phoenix Guard: Know their destiny (unbreakable), Magic Resistance, Ward Save. (maybe something about flaming attacks).
-SWs: Stalkers (?), Night Warriors (?).
-DPs: Caledor Proudness, all the rest remains the same.
-Lion Chariot: Same, cheaper.
-Flying Chariot: RBT on top of it, crew with elven weapons.
-RBT: cheaper, better.
-Dragons: Will of the Dragon (mix of 5ed. rule plus communion with rider that makes them share some rules). Super Dragon (Caledor Dragon?) may be wizard too.
-Phoenix: May be consecrated to Asuryan or another God (Phoenix alone or in a shrine?)
-Fire Dragons (MC): same as dragon princes, beast mounted is better than eagle but worse than a hypogryphe. Fly, 1+AS. Rare.
-Maiden Guard: Avelorn Mirror (?), Deadly in CC (?) (Translator says: I think no one knows what they'd do. I thought they would not exist, thought this was a wishlist... Maybe it's just a unit upgrade after all...).
-Warrior-mage (different from dragon-mage): Hoeth disciplines, fighting magic (guy was convinced one of them would be Belannaer).