both are integrated into the image. while NB has been maintained directly, athens should still be loadable (if not the case��� we have a problem for the future :P).
yes, we are slowly moving in the opposite direction of ���all maintained in the image���, and eventually we plan/dream to have a small kernel and a bunch of configurations to produce Pharo.
now, about NB, we do not have special plans.
it is in the image and it will be maintained as part of Pharo.
now, since the most common use of NB is for FFI, and NB is not present in all platforms, we are working (Ronie, in this case) in a ���unified FFI���, which will provide a common abstraction layer for several FFI frameworks (NB, OldFFI, Alien���). With that, we can choose which one of the frameworks we use depending on the situation (but ideally, we will maintain just one, the one that fits better in Pharo).
Again��� this are just ideas for the future :)
Esteban