Moodle HQ tell is that Moodle 2.1 will be launched – with a favourable tide and a fair wind – on 1st July. I’m holding back on doing any more with Moodle 2 until I see this: especially as it will include the ability to import and convert Moodle 1.9 courses.
By the by, I’ve been working with a new client who I started on Moodle 2.x, and it has worked very well. She and her users have found it to be straightforward and logical, and the conditional activities have been a treat. It’s the transition from 1.9.x to 2.x that’s at issue. Maybe I should get the Moodle 1.9 part of my brain cut out.