The first sneak peek was announced today in taiwan showing the new 3v3 mode

A piece of lore for the 3v3 mode was included. Basically the evil guys are trying to revive the lord of darkness, Volkath (read more info about him in Maloch and Tel’Annas’ lores), and the good guys are trying to stop it. It’s Darcy, Murad, & Yena VS Zephys, Hayate, & Errol

Anyways, here’s the mechanical changes

All heroes have the “soul eater buff”: Getting a kill will restore 20% max hp and 15% mana

Garnak buffs are now: 1st stack-20% attack speed. 2nd stack-15% damage reduction. 3rd stack-20% damage increase

For the first 3 minutes and 30 seconds of battle, the core enters defense mode. If the core hp falls below 20%, it will gain a 30% max hp shield and 70% damage reduction that lasts 10 seconds and instantly revive all ally heroes

Towers gain 50% damage reduction for the first minute of the game and 25% reduction from the first minute until three minutes

For the first ten seconds of the game, the base grants a 90% speed boost

There is a heal pack on both sides of the river. Picking it up will heal all ally heroes within 800 units by 15% max hp

Hero respawn timers are shortened