Today we're introducing Delta, a multiplayer environment for coding with agents and reviewing what they build, and we're inviting the first users into our private beta. Delta keeps code and conversations connected, so developers and agents can work together with the full context of how the code came to be. Delta is the second half of a plan we've been executing for years: to build the best place to write code, then make it the best place to talk about code. When we first started out, not everyon...