Originally Posted by momofmeg
Paul what does that mean? Older ships getting upgrades of Solstice class?
Yes - it is the newest trand in cruising, especially for the Royal Caribbean/Celebrity family.
They find the features from their newest ships that have become most popular and then they "roll them back" to older ships in the fleet - meaning they add them to the older vessels, usually by upgrading an existing facility to a newer one.
A classic case of massive "rollback" upgrades is what Royal Caribbean just did to Radiance of the Seas; giving her many features from the Oasis class as described in this article with pictures:
Sneak Peek: Royal Caribbean's Radiance of the Seas Upgrades in Pictures