Yeah, nothing optional about it. It forces you to update if you ever want to sign into PSN.
No - it doesn't - that's why it's called optional There were several non-mandatory FWs in the past already, nothing new or unusual about that. But indeed - soon or later - this one or next will become mandatory anyway.
ahhh.. it makes you wonder if people have been caught logging in with cfw3.61 that's why the update is here and its optional as the cfw isnt released publically yet.. HMMM. wonder if theres a gaping hole in 3.61.. wish i knew what to do, but i don't so i'm gonna sit here and speculate.. LOL
that's funny, it wasn't optional for me.. it wouldn't let me sign into psn unless i updated first. every time i went to sign in, it said a new update is available, please update your system software yes or no. i chose no, and it wouldn't sign in.
Monday night, after playing MAG trial, which was when they "released" the firmware, it was not quite optional if when signed off from one account and tried to sign on to another account. There were people posting such problems on their blog too.
Obviously, they changed it to optional sometime between then and Tuesday morning because ability to log into the PSN with official firmware 3.61 is back again.