They are just sick and tired of ppl coming in and pointing this out, I mean, if you just go 3 pages back, your answer is probably there. I have been following quietly and laughing for my self since the beta was leaked. About this, madness, and I get that ppl have steam shooting out of their ears every time somebody say something about stuff like this. And this time It finally managed to quiet down a little. (and I mean little, more like a fraction.)
But the info you want is
in the OP (1st page) It's called "change log" Always check the "change log" and "Developer Notes" before downloading a new game and/or update. (ALWAYS! Important info could be in there ;P)
Sure a "warning" is not there, but It clearly says about the missing renders, broken saves etc etc. it's enough for ppl to know that this could be a buggy mess, so play at own risk.
Also, I recommend making a rule of thumb, before pointing out a "bug" or asking a question about a new update, check at least one (two or three if you have the time) page's back. If it's a well known issue, ppl will probably have pointed it out 100's of times already. And the normal thread dwellers are getting real tired reading about it.