I would seriously doubt HAL is about to sell her (though I never say never). She is HAL's "Elegant Explorer", has a large and loyal following, and sails quite a few very wonderful itineraries that the other ships don't do.
Several years ago, we sailed on a HAL ship that normally was always in pristine condition. Not so our voyage (just about everything that could go wrong, did), and several felt HAL was letting her run down to sell her off. She's "alive and well", and from all reports I've received, is in fine condition again.