How do you write email product updates that users actually enjoy?

I keep finding reasons to build more features and bug fixes before sending an email update to our 10k users. In the end, it’s been almost 5 months without sending any update. Would love your tips on how to send email updates that the users actually enjoy and care about. Also at what frequency? As a developer I love bare change logs but I’m sure it’s not optimal for a broader audience. (we are building a video editing app, tellers.ai)