While it wasn't specifically about the year 2000, the story centers on a man who wakes up in the year 2100 after being cryogenically frozen for 100 years. He discovers a society drastically different from his own, with advanced technology and a focus on collective well-being.
However, Wells's vision of the future was ultimately dystopian, showcasing a society where the wealthy elite controlled everything and the masses were exploited.
There are other authors who wrote about the year 2000, but they didn't necessarily focus on a "perfect society." For instance, Arthur C. Clarke wrote about a space station in orbit around the Earth in his 1979 novel "The Fountains of Paradise."
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