Judging by the youtube videos I have seen, CM9 is coming along nicely. I think once a 3.0+ working kernel is working, it will only be a matter of time.
The obstacles with the NT are B&N's bootloader being locked down and continuously changing. That keeps holding up development as new fixes are constantly being needed to progress further. Now, it seems, with the introduction of the 8GB version, it seems to be stalling a bit again while current progress is ported over to that build as well. I may be wrong on that, but that's the way it seems to me.
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Galaxy Nexus (GSM) - EuroSkank Nightly Build with Trinity Kernel
Nexus One - Retired and sold
G1 - Retired and collecting dust in its box
Nook Tablet Rooted
CM9 Internal/CM7 SD