To clarify...the Nook will be getting a market but it will NOT be the "original" Market. They have their own version of the market. It is yet to be seen what exactly will be offered through that market.
They have released the SDK so developers can update their apps and submit but I have no idea how much interest there has been in that.
A rep at Barnes & Noble told me they had been working on developing apps for the market since October. I hope she is right, and I hope the apps they have been developing are the ones that open it up into a real communication device (Google Mail, Google Talk, etc.). Those things are easily installed once rooted, but it would be nice to be able to do it without root.
Having said that, I doubt you'll ever see the Kindle ap on the B&N market so I'll likely always be rooted. I like having my Kindle books accessible.