There's always some that will be displeased with the date you give them regardless of how you try to please, that's a thing not exclusive to any single forum or any other place of discussion really. It's impossible to please everyone. That said, that does not mean you should think immediately it's unapreciated by everyone either, obviously to have more contact and knowledge on when what is going to happen is and has been something very desired by the majority of the community for some time now.
There are plenty that are thankfull to know this, I myself included, but most of these people are not frequent forum posters. Keep it in mind and just remember that it's better to share this information, even if it means you'll have some annoying people that will be displeased regardless of what you do, it does not compare to leaving the whole community in the dark on these matters.
(So thank you)

