I just noticed this question:
While I sympathize with users being curious about release dates, but especially writers are notorious from missing release dates. Furthermore, there are often no sources for verifying the information, so how could we ever accept an answer?
More problematic is that we can't know beforehand whether there are any sources, so in some cases the question could be answered, but in others the question ends up being a dead end.
So, what is the purpose of these questions other than feeding our curiosity?