It was easy to miss and was probably lacking some detail, but it was announced back on March 17th .
WGT:
In addition to the USGA Virtual Championship, WGT will develop a tribute to historic moments in golf which took place at Pebble Beach. WGT and the USGA will recreate famous shots made during previous U.S. Opens hosted at Pebble Beach so that fans can experience and truly understand the skill involved. These will be featured in the "Course" section on USOPEN.com.
Perhaps another annoucement should have been made when it went live, but I guess they didn't think that was necessary. Like you I would have missed it had not someone else started a thread on it.
I can't remember what I read 2 hours ago let alone 2 months ago...lol