This is just this year and just for the Atari VCS/2600.............
2017
Homebrews released
Jan. 4, 2017 - Toledo Atomchess (AtariAge forum)
Jan. 7, 2017 - Pixels (AtariAge forum)
Jan. 23, 2017 - Dungeon II: Solstice (AtariAge forum)
Feb. 6, 2017 - Eagle One (AtariAge forum)
Mar. 2, 2017 - Sharknado - NeoGames (Atari 2600 Homebrew FB group)

Hacks released
1/6/17 - Tapper - Portable (AtariAge forums) - Thomas Jentzsch
1/6/17 - Budweiser Tapper hack - Portable (AtariAge forums) - Thomas Jentzsch
1/6/17 - Missile Control TB (AtariAge forums) - Thomas Jentzsch
1/15/17 - Popeye hack (AtariAge forums) - ILA2600
1/20/17 - Gee Bee Barnstorming (AtariAge forums) - Jamcat
1/20/17 - Zeppelin Barnstorming (AtariAge forums) - Jamcat
1/20/17 - Copter Barnstorming (AtariAge forums) - Jamcat
1/20/17 - Powered Glider Barnstorming (AtariAge forums) - Jamcat
1/20/17 - Activision Dragster Hot Wheels Hack (AtariAge forums) - Jamcat
1/21/17 - Astromech Soccer (AtariAge forums) - Jamcat
1/21/17 - Berzerk Robot Soccer (AtariAge forums) - Jamcat
1/21/17 - Dalek Soccer (AtariAge forums) - Jamcat
1/21/17 - Lost in Space Soccer (AtariAge forums) - Jamcat
1/21/17 - Astromech Tennis (AtariAge forums) - Jamcat
1/21/17 - Dalek Tennis (AtariAge forums) - Jamcat
1/21/17 - Lost in Space Tennis (AtariAge forums) - Jamcat
1/22/17 - Star Wars Salvage Run Hack of Jr Pac Man (AtariAge forums) - Jamcat
1/22/17 - Zerk-Man (Ms. Pac-Man Hack) (AtariAge forums) - Jamcat
1/22/17 - Zeppelin Attack (Commando Raid Hack) (AtariAge forums) - Jamcat
1/22/17 - Star Wars Targ (Universal Chaos Hack) (AtariAge forums) - Jamcat
1/27/17 - Vector Vaders (Megamania hack) (Atari 2600 homebrew FB group) - Scott Dayton
2/3/17 - Lunar Outpost Defense (M.A.D. Hack) - Jamcat Reloaded
2/4/17 - Zombie Soccer (RealSports Soccer Hack) - Jamcat Reloaded
2/6/17 - Mouse Soccer (RealSports Soccer Hack) - Jamcat Reloaded
2/8/17 - Grave Robber (Gopher Hack) - Jamcat Reloaded
2/17/17 - Marble Craze TB (trak-ball hack) - Thomas Jentzsch
2/18/17 - The Passion of Jesus (Red Sea Crossing hack) - Atari Dogs
2/19/17 - Fonz Enduro (hack) - Out_of_Gas
2/22/17 - Adventure Kingdoms (hack) - ZenBiped
2/26/17 - Flying Monkey Joust (hack) - Jamcat Reloaded
2/26/17 - Gyrocopter Joust (hack) - Jamcat Reloaded
2/26/17 - Jetpack Joust (hack) - Jamcat Reloaded
2/26/17 - Mario Bros. Joust (Joust hack) - Jamcat Reloaded
2/26/17 - Rocket Joust (hack) - Jamcat Reloaded
2/26/17 - Sea Monster Joust (hack) - Jamcat Reloaded
2/26/17 - Space Invader Joust (Joust hack) - Jamcat Reloaded
2/26/17 - Zeppelin Joust (hack) - Jamcat Reloaded
3/4/17 - When Pigs Fly (Joust hack) - Jamcat Reloaded

Releasing Soon (actual software)
Soon - The Celery Game - Chris Read & Tim Duarte of 2600 Connection
Demo'd At 2016 PRGE/releasing soon - Scramble, The Stacks, Anguna 2600, Drive!, Assembloids 2600,
L.E.M., Golden Legends (Gauntlet 2600), The Gizzle Wap and The Strange Red Tree - AtariAge
Soon - Dark Cavern (hack) - Scott Dayton
Soon - Fire Ants - ComiSoft Inc.
Soon - Twist'r-Shark (was "Sharknado") - NeoGames
Soon - Balloon Girl - Jason Santuci
Soon - Legends - Scott Dayton
??? - Alien Greed: Return of Charles - NeoGames
??? - RAM-Pong - Packrat Games
??? (carts signed Feb 2015) - Demons (based on the 1985 movie) - NeoGames
On Hold - Tunnels & Trolls - Jason Santuci
??? - Zombie Road Kill - Scott Dayton
??? - Aaron the Aant - Chris Read/2600Connection
previewed at 2015 Portland Retro Gaming Expo - The Stacks, Panky the Panda - AtariAge
WIP - Laughing Boy - Jason Santuci/AtariAge
WIP - D.K. VCS, DK Arcade 2600, Pac Man 8k, Wizard of Wor 2: The Arena - AtariAge
Future project - Colony 7 TB (Trak-Ball version) - Thomas Jentzsch

WIP (work in progress during 2017)
Dec. 31, 2016 - PArsec - hloberg
Jan. 11, 2017 - Avalanche Invaders (hack of Avalanche) - Scott Dayton
Jan. 22, 2017 - Dungeon II: Solstice - s0c7
Jan. 23, 2017 - Danny - The Maxx
Feb. 3, 2017 - Air Taxi - Kylearan
Feb. 6, 2017 - Space Cactus Canyon beta - bjbest
Mar. 4, 2017 - Chaotic Grill (better Burgertime) - splendidnut - back working on it