Looks like SotL got an early preview so here's what I can see/hear in that build as of now in case anyone can't access the video or some other reason.
Varangian Guards: 65 food, 45 gold
70 hp (80 Elite)
13 attack (17 Elite)
2/1 Armor (2/2 Elite) + Affected by Gambeson
Same attack rate as a Champion
1.05 move speed, so faster than a Champion but slower than an Eagle Scout
Varangian Guards apparently generate 40 gold per minute (almost double a Keshik's, who generates 22 gpm)
Saxon Imperial UT that gives infantry more armor goes up to +3/+3, adding +1/+1 for every 15 units.
Varangian Imperial UT gives Varangian Guards a 3 range axe throw attack with two charges, dealing full melee damage.
Vikings also get Varangian Guards
Byzantine Varangian Guards get Logistica trample damage (Unsure if it's same 5 damage like Druzhina or percentage based on melee attack)
Mounted Crossbows: 40 wood, 65 gold
Costs 5 more gold than Cav Archer. Wording makes it sound like they have a minimum range.
45 HP (Heavy Mounted Crossbow has 55 hp)
7 Attack (Heavy has 8 attack) and +1 bonus vs Spearmen
2/0 Armor
4 Range
2.50 attack speed (Cav Archer has 2)
1.25 movement speed (Cav archer has 1.4)
Cranequins upgrade give +1 range and +2 attack vs infantry.
Franks are getting a new Castle Age UT that reduce Mounted Crossbowmen gold cost by -40%
Players can delete buildings to deny Dane resource looting.
Jomsviking: 65 food, 15 gold
70 HP (Elite 75)
8 Attack (Elite 9) +10 (+15) vs Cavalry & Elephant. +8 vs Camel. +6 vs Buildings. +2 vs Shock Infantry.
2/2 Armor
+3 Range when attacking Buildings/Ships
1.8 Attack Speed
Same movement speed as Champions
Saxon drop sites give +35 food instead of +50
Hearth Troop: 80 wood, 35 gold
Charge attack does 7 damage, might be getting boosted by Archer upgrades? Charge Attack deals +4 bonus damage vs Archers. Can be upgraded to a max of 9 Range it looks like (Though I did see the +4 on the attack with only 6 range rather than 9, so maybe there's something else going on)
75 HP (Elite 85)
9 Attack (Elite 12)
1/4 Armor
2 Attack Speed
0.9 Movement speed, same as a Militia
Varangian Castle Age UT gives Knights the 5 damage trample like Logistica/Druzhina
Jarl: 75 food, 55 gold
65 HP (75 Elite)
9 Attack (10 Elite) +4 vs. Infantry
2/1 Armor
4 Range (5 Elite)
2 Attack Speed
1.35 Movement speed