Ok, let's put this in perspective.
Everyone before 1.1 was a beta tester. Jim's betas are virtually bug-free compared to everyone else's shipping products, but that's neither here nor there.
So the Aquarium worked really well but it was cobbled together with duct tape and beautiful art. It was a struggle to add anything to it. Jim will admit this with no reservation. Adding the Lionfish was likely 1 month of art and 5 months of beating his head against a wall trying to get DirectX and his existing algorithyms to behave with a totally new fish, moving mouth and gills, etc.
It was announced in June 2001 that Prolific would be dipping into the Aquarium code to start making tweaks here and there and make it run a lot better on a lot of different configurations.
Thousands of hours by 2 programmers, another artist, and a lot of direct involvement by Reichart later (his job is to manage all the products, not 1!!!), the Aquarium is modular, extensible, runs smooth as silk on more systems than any other screen saver in the same league, etc. All this work that's been done is going to pay off big-time. The bear has been in hibernation, but now it's out.
A promise was made towards the testers before 1.0 came out. That promise is being maintained. I do recall Jim saying that after 1.0, some things in the pricing would change but it was not specified.
Jim also thought he'd be done with the Butterfly Garden and halfway thru the first Saltwater Creature Pack by now too. Things don't always go as planned.