[c-nsp] 12.2SXF?

[Kevin Graham]

Just stumbled across this in dynamic config tool -- yet another
12.2(18)SX derivative. Is there a product bulletin that explains the
exotic dance ritual 12.2S is undergoing?

3550 -- (25)SE -> (25)SEA -> (25)SEB -> (25)SEC
6000/720/3 -- (17)SX -> (17)SXA -> (17)SXB -> (18)SXD -> (18)SXE -> (18)SXF
4000 -- (20)EW -> (20)EWA

Rodney had mentioned on this list about 12.2S being spun off into
platform-specific trains. This is understandable and explains a few of
these hops, but particularly the 12.2SE progression has me baffled.