My bet: 2012 is the last Lotusphere (i.e., event with that name). Check the post link below for more details.
They are still going to call that conference in Orlando 'Lotusphere'. But they are going to attach a 'Social Business' event to it, much like last year. And then they are going to remove the band-aid very very very slowly.
I would suggest to speed this up. Whoever loves Notes, could not care less. And those who don't, do you worry about them? IBM is pushing Connections into Notes accounts (see the 'free' entitlement for Profiles and Files in 8.5.3) and Microsoft account alike. The less it smells of Lotus, the better.