LL announced, some time ago, that it wouldn't be setting up official events or sims for the ninth anniversary of Second Life, leaving it up to the Residents at large to celebrate however they (we) might want.
I am more than a little pleased to see that the Residents at large have stepped up to the plate! See here ... So far, sixteen sims and more than fifty exhibitors, and hopefully more to come. Will I be there? As an exhibitor, probably not, given things like work and RL and stuff. As a visitor, you bet. With bells on, even.