The new dolphin place was already going to be a Discovery Cove like experience and the new gate structure has been in the plans for years. They have just been waiting for money to open up in the company budget to fund a new entrance area for the SeaWorld park itself, which will look very similar to the Explorer's Reef at San Diego. The idea is that you buy your tickets in the same place outside the complex gates. Then, once you've gone under the main complex gates, you have the option of going straight to the Aquatica gate, or left or right to the SeaWorld gates (the left one is Dolphin Point and the shark area while the right one is everything else).