Halo 3: ODST‘s campaign is set to be added to The Master Chief Collection on May 29th, according to a leaked Xbox store listing.
The listing for the add-on has since been removed and was originally spotted by Xbox Dynasty. It was listed as being an 8.1gb download.
Halo 3: ODST‘s campaign will be free for anyone who bought The Master Chief Collection before the 19th of December last year, back when the game was more than a little broken. There’s yet to be any word on how much the content will cost if bought separately.
As expected, the new content will run at 1080p and 60fps.
If the release date of May 29th is accurate, then we can expect an official announcement within the next few days.