I'll be honest with you, I have not ever bought a pdf from WotC, White Wolf, or any of the other large game companies except Steve Jackson Games. Even those were bought quite a few years ago. I do not know what their previous policy was. I was going under the assumption that they were operating in a manner similar to the way the multinational companies I have worked for operated. If one has consistent experience with a set of assumptions, one does not tend to assume that things are done differently. I was just calling it like I saw it."Naturally assumed?" The vast majority, if not all, of the PDF releases from the big guys (WotC, White Wolf, etc) have been the exact same files as the printed versions. Errata has been incorporated when new print relesases have been put together. Why would one "naturally assume" WotC would buck the trend and do differently?
I would of course love it if every time WotC became aware of errata that they update the PDFs, but I also feel that expecting them to do so is unrealistic. You are being overly harsh on WotC for simply business as usual.
Even if their prior method of handling errata was different, WotC has said that things are going to be new and improved with this edition. Since the handling of errata and pdfs was poor in the past, one hopes that things will be better now. I am sorry if my view is outside the norm and is potentially unreasonable to others. It's my personal opinion, which really only has to be reasonable to me.