Chris Fleming
There is a note on the canmore entry for this: https://canmore.org.uk/site/52498/edinburgh-princes-street-gardens

"11-01-2018

The Edinburgh Runestone (suggested additional name to allow ease of finding) has now been removed from this location and is now at AOC Archaeology Group for conservation before planned reinstatement in a new location outside 50 George Square. The new location will be advised as soon as it has been reinstated." So worth keeping an eye on.