I think people are still confused about some things, so let me restate what Andrew and some others have said:

1. Dolphin U has been renamed to Trident to avoid confusion with the original Dolphin. The fact is, the codebase is becoming more different, and Trident is not necessarily backwards compatible. Furthermore, while Dolphin is optimized for social networking and other community sites, Trident is pretty bare and more of a core right now. This will eliminate the confusion a lot of people had see more that Dolphin U (now Trident) will be an upgrade for existing Dolphin sites. It won't.

2. Dolphin's next release will have the product renamed to Dolphin Pro. There is no new secret product here, it's just a new name to highlight how advanced the script is, especially when 7.2 is released. The license change only means that free users (those who do not have a license) will need to buy some of the more popular BoonEx-made extensions, while users with a license or Prime are completely unaffected. Depending on how much all the extensions combined will cost, it's indeed likely that buying a license now will save you some money. It's also possible that if you only need one or two extensions, you could save a lot of money over the current license price. So I feel this works out for everyone.

Pushing Trident off to another site is a good thing, I feel, as it means Dolphin will remain the focus here. This is where the establishment is, and this is where new users and developers all hang out. Trident having its own site and community means there won't be any competition, and hopefully it'll allow BoonEx to further take Trident into a direction of its own. It's an excellent core that can be extended into pretty much anything, so it has a lot of potential. But when it comes to social networks and communities, nothing beats Dolphin. Hopefully this will keep people from waiting around to start their new site, when Dolphin is already here and is a mature product with thousands of extensions.