Although there is no official announcement yet and last year's Galaxy Xcover 4 was only released in Europe and Canada, a Galaxy Xcover 5 was recently discovered on Samsung New Zealand's website. Since the webpage was taken down in the meantime, it is rather safe to assume that it was all an accident and this rugged phone will be unveiled soon.
https://www.notebookcheck.net/Samsung-s-rugged-Galaxy-Xcover-5-shows-up-online.299308.0.html