When you use "get to ___", it sounds like you have a long list of things to do, and you're finally reaching one item on the list. You use this phrase when you're busy:
I'll try to get to that this afternoon.
You can also use this phrase when you have a lot of things that you want to talk about in a conversation, a speech, a meeting, etc.
I wanted to talk about the new marketing campaign we just rolled out, but it looks like we won't be able to get to that today.