Valve isn't putting Gordon Freeman into any new games, so Deadlock modders have taken matters into their own hands
To spare myself the psychic turmoil, I decided to accept years ago that Half-Life 3 will never happen. Best case scenario, I get to be delighted by being proven wrong. Worst case, I'm sparing myself from the cyclical mass psychosis of reading an imminent Half-Life 3 announcement in whatever tea leaves we've convinced ourselves exist.
But if the studio doesn't seem interested in bringing Gordon Freeman out of retirement in the foreseeable future, modders are more than happy to give Gordon...