I've been using FCPX since it came out and i love it, but i haven't been using it for big projects as it's been a little buggy. Hopefully this new update will help with that. Among other things it comes with support for external monitors, editable photoshop layers and mutlicam editing, but most excting are the plug-ins such as 7toX, i havent tried it yet but apparently you'll be able to update FCP7 timelines. Time to have a play