I'll look at it of course, but this kinda reminds me of the whole Tome of Horrors/Fiend Folio dispute of a few weeks back.
WOTC, said naw, we won't be doing these monsters in the forseeable future...then BLAM a year later there they are. the whole timing there is very screwy.
IIRC Monte asked WOTC to use the name "AU", and they said "sure, no prob" (probably thinking, that title had a fairly negative image in the 1E days, we won't ever use it)
And now as the furor is building for Monte's "variant book" out in a few months, WOTC decides to release a similar themed title under the name "UA"?.
Seems fishy to me...