Huh? Previously you said you don't expect an ETA, now you're saying that you do? Their honest estimate is that it'll be out as soon as possible. As soon as its done they'll release it.
As far as the complaints are concerned, I do think much of it is driven by paranoia. I have not seen a single report of someone who continued to play and found themselves unable to progress because they are under leveled. What we have seen is people who decided to play despite the bug who are progressing and completling the game with plenty of levels to spare. Personally, I got exp for only one main quest entire time in Novigrad, yet I finished the area at lvl 18 when the final quest is only level 13.