Halo Infinite is releasing in Holiday 2020 but no gameplay has been shown, and the recent news of two project leads has left the community in doubt.
Since it was confirmed that the game will be released in Holiday 2020, there have been some high profile departures from 343 Industries, the developer working on this upcoming game. One of the developers who was confirmed to have left the studio was the created director of Halo Infinite, Tim Longo. In his absence, Microsoft had appointed Mary Olson to take responsibility as the lead producer on the project.
Source: N4G PC Halo Infinite Community Manager Says Lead Producers Departure Wont Affect The Game