At the Microsoft E3 press conference, some details on the next Xbox was announced and probably as a surprise to no one, Microsoft revealed that Halo Infinite would be a launch title for it.
While not much was said about the next Halo, a 5 minute scene was shown as Master Chief gets rescued. 343 is promising to take the series into a whole new direction and we'll know more in about a year.
For now, enjoy the return of Master Chief as he'll be making his next appearance in the next generation console from Microsoft.