From New World Notes:
Confirming unofficial reports from earlier today (which I've moved below), Linden Lab just sent me this statement about the new virtual world it's building:
"Linden Lab is working on a next generation virtual world that will be in the spirit of Second Life, an open world where users have incredible power to create anything they can imagine and content creators are king. This is a significant focus for Linden Lab, and we are actively hiring to help with this ambitious effort. We believe that there is a massive opportunity ahead to carry on the spirit of Second Life while leveraging the significant technological advancements that have occurred since its creation, as well as our unparalleled experience as the provider of the most successful user-created virtual world ever...