One thing we've always struggled with ongoing communication about the success of previous launches. Do you have a framework for revisiting and communicating out things like "hey here's how that thing we launched 3, 6, 12 months ago is performing"?

There are lots of frameworks, templates, and communication channels you can use to create ongoing communication about past launches. I usually find the biggest issue with this type of communication is not a lack of framework or tools, but usually either (1) remembering to do it or (2) keeping people’s attention post launch. For remembering to do it, I would just set calendar reminders for yourself and hold yourself to it. That is what I personally do. 

For keeping folks' attention, I would suggest starting a cadence of regular updates BEFORE the product launches - then you can get people into a rhythm of updates. They will know when and where to expect the information. Then once you get past launch, you can adjust cadence but keep the content and the channels the same con continuity. This can help people to have a mental model to receive this info, even well past launch. 

A framework that I like to use for these types of updates is: wins, learnings, next steps. This is a good way to keep people focused on the impact of the work, and may also encourage more attention if you are good at highlighting learnings that can be shared more broadly with other teams.