my guess is publishers and developers are still behind in the sense that they did not expect the switch to do as well as it has, and so there’s a lot of catching up to do in terms of planning, developing, and releasing the ports.
i wouldn’t worry too much about a supposed lack of third party support. i imagine the support will only increase, and by the end of the year we’ll all have no doubt that the switch is getting the love it deserves from all publishers.