I just hit the publish button last night on my new Facebook Timeline... after days of thinking about this. I believe the automatic conversion time is after October 31st. There are only a few features I like, but mostly I'm not totally sold on the two-column layout as I find it challenging to know what's most recent. I also don't care for the five categories of "life events" front and centre on my home page. It's also a lot of work sorting, planning, and changing dates for photos and events, so they go into the correct dates for your timeline. Choosing what you what private and change setting to suit, it's like work and I have enough of that. It's still early days but still not sure if I'm going to like these now changes.
Click on the photo to enlarge to see it more clearly.