Two things make me think they will.
1. They recently made a deal with Appcelerator to favor apps built using those tools and to provide more support for those developers (for those who don't know Appcelerator allows you to write iPhone and Android apps with web tools like RoR, Python, Javascript, CSS, etc...)
2. They are offering support in all B&N stores.
So they're being developer friendly to get more apps created (as opposed to Amazon where you have to give them permission to give your app away just to get in their store). And they're working to draw in casual users.
To my eyes that makes the Nook Tablet a very attractive offering both for consumers to buy and developers to build on.