March 22nd announced as official release date for Joe. Weapon balances are also being made at the same time. Translations so far are lousy, so us gaijin need to wait awhile. (It's called the "Spring Update," rumors abound of a lot more than 1 monster added, but right now it's just Deviljo)
From what I've seen of the poor translation, Red + White, Red + White + Orange is going to give a larger attack buff to Insect Glaive. Longer duration to all buffs. Timer does NOT count down when mounted (!!!)
Long Sword has larger Foresight window
Great Sword gets Stronger Lv. 2 and 3 charge attack damage
SnS can now use Wedge Beetles with weapons drawn. Stronger round slash.
Hammer has increased stun damage for a variety of its attacks
Hunting Horn gives Attack Up + Knockback Protection when you land an Encore.
Gunlance is getting a buff to Wyvern Blasts, and it uses less sharpness.
Dual Blades gets faster Demon Gauge I think?
No changes for Bowguns, some bug fixes for bows.
Lance is getting 'Super Armor' following successful Counter Thrust. No more getting ragdolled after blocking the first hit of a multihit combo I guess?
Switch Axe is getting Lv. 4 Earplugs during ZSD. ZSD is getting a power boost. Sword Mode charge no longer going to be consumed when Discharging during a Mount. New combo paths as well.
Charge Blade seems to be getting a nerf to its 'stun' from Ultra. Impact Vials are getting a damage reduction, Power Element Phials are getting a boost, and will detonate in a more dense area compared to the wide 'V' shape right now. Certain damage boosts will not be affecting Vial blasts?
Free one-time redesign of your hunter (not gender?). After this, it will cost "money" (in-game? real?).
After completion of a hunt, a third option will be added - "Return to Gathering Hall."
Players attacks will no longer interrupt another player during carving.
Quicker load times. (!!!)
Deviljo Armor shown: