The sea salt is definitely not discontinued. What we get at the resorts has almost always seemed to alternate between the Sea Salt and the Grapefruit/Bergamont except for one time when we got Blushing Orange (I think that was
Disneyland). We buy the H20 to use at home, and whether we buy it from the H2O website or the
Disney store website depends on who is offering a discount at that time. (Plus, the Disney store website carries it off and on). We have bought all 3 of the scents that show up at Disney-- Sea Salt (me) , Grapefruit/Bergamont (DD), and Blushing Orange (turned out no one really liked that one!). H20 just reformulated everything very recently (I think they removed an ingredient that is getting bad press that is in a lot of shower gel and shampoos for one thing- but I also heard rumors of a brand revamp due to sales slumps) H2O didn't spend all that money reformulating and repackaging it to then immediately quit producing it. They still make shower gel, and there is no way they are going to give up the profit of bottling it and selling it to all the Disney resorts unless Disney rejected it. I can't even imagine the amount of shower gel it takes to stock all the resorts. Plus, Disney could certainly provide a different shower gel to their guests if it had been discontinued.
Now, it looks like they have discontinued the Grapefruit/Bergamont entirely. Not just the shower gel, but also the Shampoo and Conditioner and just the scent entirely. Unless a reformulation shows up, it will be interesting to see if that scent disappears entirely at WDW. It makes me wonder if WDW is using Grapefruit/Bergamont until their current supply runs out and they ran out of Shower Gel first and are still using the Shampoo/Conditioner etc until it runs out and then the scent will change. I know a lot of people will use the Shower Gel, but are very picky about their Shampoo and Conditioner and don't even pick those up at hotels, so I can definitely see the Shower Gel running out first. (Okay, okay- I will admit that we have a tendency to move the shower gel bottle of H2O we are using to our luggage and back every day so we will get a new one every day and can take some home!).