Hi! and Happy New Year!
Well, Facebook is rolling out another change. They are changing the way their 'mail' system works. For those of us with business pages, some functionality has already changed.
First of all, to send an 'update' to people who have 'liked' your page, you now need to do the following:
Select 'Edit Page' under your profile picture for your business page.
Click the 'Marketing' tab.
Click 'Send an Update'
You used to be able to 'send an update' from the bottom of your business profile page.