Announcements for change that is yet and has happened are always necessary, I'm pretty sure you have realized this, but there will be no announcements that will be made. The very least that section is used only for system related stuff.
Sometimes things does not work as it was intended, and if you are announcing it before you have actually gotten it to work.. you are just making a fool out of yourself, this happens to everyone once in a while. This includes making a new background, we can all say that a new background is coming, but the artist wouldn't be happy with the result, and would have to remake it 5 times before getting it right and the users would get impatient and just complain and complain. Or it could be that a certain set of code aren't working for a planned update.
All in all it's to not give false promises. So announcements will be made once things are ready where everything is included. And also it's to prevent a trollfeast, that would occur with people saying no that sucks, while we know time and time again this is what happens most times when things change, "it was better before attitude". While after a couple of weeks everyone has gotten used to it and understands that its infact is way better.