UDDATE 9/8/18: Ubisoft has fully revealed its previously teased 'renovations' for Rainbow Six Siege's ageing Hereford Base map in a brand new trailer.
As hinted at, Hereford Base has seen far more than a mere facelift, and Ubisoft has completely reworked the rather bland, cramped original into something more befitting of a game that's consistently evolved and improved since launch. Ubisoft says the new map will be "one of the most competitive environments" in Rainbow Six Siege. Oh, and as suspected, it now features rather a lot of rain.
The new look Hereford Base map is scheduled to enter circulation as part of Rainbow Six Siege's Year 3, Season 3 update, known as Operation Grim Sky. Ubisoft is set to reveal further details, which will hopefully include a release date, via its Twitch stream on August 19th.