Internally: Be prepared for every product change your team ships. Externally: Give users a dedicated place to self serve all questions related to product change.
A new feature, a bug fix, a design tweak -- every product change impacts your customers. Use LaunchNotes as a way to give customers a heads up as soon as you know work has kicked off.
Communication on product changes big and small is the proactive support you can delight your customer base with outside of the queue. Announce when product changes are coming up instead of keeping customers in the dark.
Provide a dedicated place your customers can keep tabs on product changes. Eliminate customer confusion and surprises on launch day.