Here's a compilation of all changes I can see today. I will add the full detail of changed troops to this post, except for Urskaya troops which will get their own post later.
Latest spoiler changes
Stonehammer now stuns/burns all enemies, and creates 15 red and brown gems. His cost was raised to 24.
Tesla now deals true damage, her base damage is increased from 4 to 8, and her last trait gives 5 (was 4) attack and armor to mechs,
Garuda has its last trait changed to " Allied Stryx gain 5 Life and Attack" (was 4 life and magic). Too bad.
Elemaugrim now creates purple gems intead of red. Cost raised to 25. Trait changed to "Decrease all enemies' Attack by 2 on 4 or 5 Gem matches"
Urskaya troops got spells and traits.
Full details of changed troops:
Mythic / Khaziel / Divine Dwarf
Spell: Ancient Wrath (24 Blue/Brown/Yellow) - Stun and Burn all enemies. Create 15 Red and Brown Gems. Gain [Magic+1] Life.
Traits: Thick Head / Warded / Unbreakable - Reduce damage from Skulls by 80%.
Requires: Minor Earth, Arcane Shield, Arcane Mountain Traitstones
Max stats: Attack - 14; Life - 37; Armor - 20; Magic - 7 (When fully ascended and level 20)
Flavor Text: Sing along with me...
Will arrive Today (2017-04-07).
Legendary / Adana / Human
Spell: Overload (15 Blue/Red) - Deal 8 true damage randomly split among enemies, boosted by all ally and enemy Armor. [4:1]
Traits: Mech Bond / Invention - Gain 1 Armor on 4 or 5 Gem matches. / Overclock - Allied Mechs gain 5 Attack and Armor.
Requires: Minor Water, Arcane Blood Traitstones
Max stats: Attack - 18; Life - 24; Armor - 22; Magic - 0 (When fully ascended and level 20)
Flavor Text: An expert on current affairs....
Will arrive in 3 days (2017-04-10).
Legendary / Suncrest / Elemental Stryx
Spell: Fiery Rain (17 Red/Yellow) - Summon a Firestorm. Deal [Magic+1] damage to all enemies. Gain 1 Magic, boosted by Red Gems. [3:1]
Traits: Naga Slayer / Fireproof / Soaring - Allied Stryx gain 5 Life and Attack.
Requires: Minor Fire, Arcane Storm Traitstones
Max stats: Attack - 18; Life - 27; Armor - 18; Magic - 6 (When fully ascended and level 20)
Flavor Text: What the Flock?
Will arrive in 7 days (2017-04-14).
Mythic / Dragon's Claw / Daemon Dragon
Spell: Last Shadow (25 Brown/Red/Purple) - Deal [Magic+3] damage to all enemies. Create 8 Purple Gems, boosted by Burning enemies. [1:1]
Traits: Magic Heart / Impervious / Darkness - Decrease all enemies' Attack by 2 on 4 or 5 Gem matches.
Requires: Minor Fire, Arcane Lava, Arcane Dark Traitstones
Max stats: Attack - 20; Life - 23; Armor - 23; Magic - 11 (When fully ascended and level 20)
Flavor Text: In darkest day, in blackest night.
Will arrive in 28 days (2017-05-05).