Rails 3 roadmap

Hi all,

Is there going to be a roadmap for Rails 3? Many early adopters and
plugin developers are already using Rails 3 now. It's very important
for us to know what is the foreplan so we know what API that might
break and still changing. One example that I found is the
action_controller API has changed alot now, and many security plugin
is not compatible anymore.

Thanks all.