There has been an unannounced change to the community standards, which can be read here. The main point people have noticed so far is with regards to disclosure:
Residents are entitled to a reasonable level of privacy with regard to their Second Life experience. Sharing personal information about your fellow Residents without their consent — including gender, religion, age, marital status, race, sexual preference, alternate account names, and real-world location beyond what is provided by them in their Resident profile — is not allowed. Remotely monitoring conversations in Second Life, posting conversation logs, or sharing conversation logs without the participants’ consent are all prohibited.
Now before people start popping the champagne corks thinking this means the end of Redzone, think again, because without Linden Lab applying some common sense and moderation, things haven’t changed that much at all.