These avatars have been created using the latest features in Second Life like Bento. The avatar complexity for them is around 10, 000 – 20, 000. One of the new avatars comes with a pet dog. The Second Life Join page now has a better range of new starter avatars than it did many years ago I think. This will definitely help new residents in Second Life get started.
Linden Lab plans on rolling out more new avatars with new styles/themed for new residents in the near future. There is a thread set up on the Second Life forums to discuss these new classic avatars.