For a TL:DR, the latest update is short and sweet, and brings a few minor Hero tweaks (the biggest being a nerf to Lich), while there's also a much needed nerf to Tombstone, an item recently introduced that's far too potent. 

GENERAL

• 2-star and 3-star visual upgrades for Batrider, Enigma, Slark, Sniper, and Warlock.
• The janitor took out some more crash trash.
• Fixed an issue where Terrorblade could Sunder with the wrong unit at cast time, including dead units.
• Can no longer enter combat preview mode on the board when in combat.

HERO CHANGES

Bloodseeker:

• Bloodrage:
  • Now ramps up to his existing maximum attack speed bonus of 500 earlier, at 20% health (was 0%).

Lich:

• Chain Frost:
  • Bounce range changed to 2 (was 4).

Templar Assassin:

• Added Meld:
  • When first attacking after teleporting, Templar Assassin fires a projectile that does [50, 100, 150] damage on impact and decreases her target's armor by [2, 4, 6] for 5 seconds.

Treant Protector:

• Leech Seed:
  • If the target of Leech Seed dies before the ability duration expires, the seed jumps to another target for its remaining duration.

Tusk:

• Walrus Punch:
  • Tusk is now invulnerable while mid-Punch.

Warlock:

• Shadow Word:
  • Now heals 75% of the total heal instantly, and the remaining 25% over the duration of the buff. This results in [168, 337, 675] instant heal and [56, 112, 225] over the remaining duration.
  • Damage per second changed from [50, 100, 150] to [75, 150, 300].

ALLIANCE CHANGES

Deadeye Alliance:

• Added a small health difference buffer to prevent Deadeye units constantly changing targets.

ITEM CHANGES

Tombstone:

• Raise Zombies:
  • Range changed from 2 cells to 1.