Episode III spoiler

I read somewhere, and I don’t remember where, that according to the official REVENGE OF THE SITH novel, Darth Plaguis is Darth Sideous’ master, as I predicted.

Still no official word I’ve come across anywhere to the effect of either of these dark lords creating Anakin, though I hold to my observation of Sideous referring in passing to Anakin as “son” as a strong suggestion to the effect.