The Empress of the Seas is also scheduled to sail Cuba in the Summer of 2017, according to Royal Caribbean's press release. When I looked on Royal Caribbean's booking engine, these cruises were not yet available for booking, but since the summer months are approaching I would think these cruises would have to be posted as soon as possible. The Empress of the Seas' will sail 4 and 5 night cruises from Tampa to Cuba during the summer months. Royal Caribbean's press release notes that these cruises are not yet available, but information will be available soon.
For more details, I recommend reading Royal Caribbean's full press release. Click here to view Royal Caribbean's press, which will open in a browser window away from RyG's Cruise Guide.