[9fans] Various distributions

[Peter Hull]

 Sorry for this extremely basic question but I'm a bit confused about
the various plan9 distributions.
As I understand it, 9front is a fork of the original plan 9 from Bell
Labs and 9atom consists of enhancements to plan9.
All three seem to be under development, but: Are changes being pulled
from one to the other, or are they slowly diverging? And, does the
recent announcement regarding GPLv2 have any bearing on the situation?
Thanks for any comments,
Pete