The Lindens have been dropping hints that new features and wonderful things are coming. Hamlet at New World Notes (NWN) is curious about the idea in an article today. See: What’s Linden Lab Working on Beyond Its Peaceful Foyer? Unfortunately he has no hard information for what the new and wonderful coming changes may be.
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However, his readers do have ideas and they are posting them in the comments. Of course everything written is speculation. The speculation ranges from horrible doom to creative. Some of the suggestions, I think are interesting, for what may be coming are;