Angry Birds 2/Version History

Since the game was released. This is the list of the Angry Birds 2 updates with new levels, bug fixes, changes in the game appearance, and more.

Ver. 2.0.1 - July 30, 2015

 * Game Launched.

Ver. 2.1.0 - August 26, 2015

 * New Levels

Ver. 2.1.1 - September 14, 2015

 * New Levels.

Ver. 2.2.1 - October 8, 2015

 * New Level and Chapter Added: Snotty Hills.

Ver. 2.3.0 - November 12, 2015

 * New Pig Added: Chemist Pig.

Ver. 2.4.0 - December 17, 2015

 * New Winter Episode.

Ver. 2.6.6 - April 15, 2016

 * WWF Campaign. 100% of proceeds from In-App Purchases will go towards WWF until April 24th.
 * Special WWF Level (level 10).
 * Special WWF spell (unlocks at level 13).

Ver. 2.6.8 - April 24, 2016

 * Removed WWF Campaign.

Ver. 2.7.1 - May 19, 2016

 * New chapters: The Hamalayas and Madagooscar
 * New Pig: Gravity Pig.
 * Win streaks: get rewards for consecutive wins in the Arena.

Ver. 2.8.1 - July 14, 2016

 * Angry Birds 2 1st Birthday event.
 * New Birthday hats.
 * New Avatars.
 * New Daily Quests.
 * The Ring of Fire. Turns burds into flaming birds, which blow up on impact.
 * New chapters: Hamberg and Oinklahoma

Ver. 2.8.2 - July 26, 2016

 * Fixed a bug relating to spells

Ver. 2.8.3 - August 4, 2016

 * Bug fixes

Ver. 2.9.0 - September 8, 2016

 * New pirate, beach, and school-themed hats.
 * The King Pig Panic has been introduced.
 * Fixed odd pig behavior.
 * Added "Beam" pigs.
 * New chapters: Hamazonas and Copacabacon

Ver. 2.10.0 - October 27, 2016

 * Halloween 2016 update.
 * More feathers in chests, daily challenges, and the arena.
 * New hats (Halloween, Medieval and Wig)
 * New chapter
 * New card tier

Ver. 2.10.7 - November 30, 2016

 * RED update.
 * New (GEM PILE) RED purchase - 100% of purchase goes towards the fight against AIDS.
 * New hats - RED mask set.
 * Special limited-time spell - FEATHER RED FLURRY

Ver. 2.10.9 - December 7, 2016

 * Removed RED campaign.

Ver. 2.11.0 - December 22, 2016

 * Introduced the Tower of Fortune.
 * New 'Pristine' card tiers.
 * New slingshot tiers.
 * New hats - Christmas, Winter, and Fancy hats.
 * 80 new levels - Pigfoot Mountains and Central Pork.

Ver. 2.12.2 - February 9, 2017

 * Redesigned home screen.
 * Overhaul to daily quest layout and rewards.
 * All treasures are better now.
 * New hats  - Valentines, Wizard, and Steampunk.
 * New 'Epic' card tier.
 * New slingshot tiers.
 * 80 new levels - Hamsterdam and Mississpiggy River.

Ver. 2.13.0 - April 11, 2017

 * Silver and the Blizzard Spell now deal more damage.
 * All chests grant better rewards.
 * The bonus system - Collect bonus points and claim rewards.
 * New hats - Easter, Work, and Mythic.
 * New 'Epic' card.
 * New slingshot tiers.
 * 80 new levels - Boarneo and Got Ham City.

Ver. 2.14.0 - June 8, 2017

 * Introduced Feats.
 * New hats - Fruitshades, Sports and Pharoah.
 * New 'Ancient' card tier.
 * New slingshot tiers.
 * 80 new levels - Twin Beaks and Hog Warts.

Ver. 2.15.0 - August 3, 2017

 * Angry Birds 2 2nd Birthday event
 * Introduced clans.
 * New hats - Birthday, Chef and Ice Cream.
 * New 'Ancient' card tiers.
 * New slingshot tiers.
 * 80 new levels - Piggymanjaro and Porkyo.
 * Bug fixes.

Ver. 2.15.1 - August 9, 2017

 * Bug fixes.

Ver. 2.16.1 - October 12, 2017

 * Introduced clan battles.
 * New hats - Jester and Spooky.
 * Halloween sales.
 * Halloween 2017
 * 40 new levels.
 * New card tiers.

Ver. 2.17.0 - December 6, 2017

 * Introduced Mighty Eagle's Bootcamp.
 * New Hat Set - Viking
 * 80 new levels - Porka Pica and United Steaks of Hamerica.

Ver. 2.17.1 - December 11, 2017

 * Bug fixes (assumed).

Ver. 2.17.2 - December 20, 2017

 * Bug fixes.

Ver. 2.17.3 ~ February 2018

 * New hat - NFL LII

Ver. 2.18.0 ~ March 2018

 * Introduced the Mighty Eagle's shop.
 * Rainbow feathers - can be given to any bird.
 * New hats - Stone Age and Samurai.
 * 40 new levels - Oinktario and Hamtarctica.
 * Valentine's day offers
 * New Hat Set: Stone Age.

Ver. 2.18.1 ~ March 2018

 * Legendary league in the Arena

Ver. 2.19.0 ~ April 2018

 * Clan chests.
 * Feather Frenzy event, double feathers for a limited time.
 * 80 new levels.
 * New slingshot tiers.
 * New Hat Set: Spy.

Ver. 2.19.1 ~ April 2018

 * Bug Fixes (assumed).
 * New Hat Set: Sci-Fi.

Ver. 2.20.0 ~ May 2018

 * Introduces Hatchlings
 * Jackpot egg on Tower of Fortune
 * 80 new levels
 * 2 new hat sets:
 * Punk Hats
 * Summer Camp Hats

Ver. 2.21.0 ~ July 2018

 * Introduces Piggy Mail
 * 80 new levels (2 areas, 40 levels each)
 * New hat set- Trible Masks
 * Black Pearl event, double black pearls for a limited time

Ver. 2.57.1 ~ September 15, 2021
Hal gets a boost to his boomerang skills! Now you can activate Hal's ability after he collides with objects. Use his newfound ability to topple extra tricky towers or deal out some last minute damage.