metamask-extension/development/announcer.js

const fs = require('fs')
const path = require('path')
const { version } = require('../app/manifest/_base.json')

const changelog = fs.readFileSync(path.join(__dirname, '..', 'CHANGELOG.md'), 'utf8')

const log = changelog.split(version)[1].split('##')[0].trim()
const msg = `*MetaMask ${version}* now published! It should auto-update soon!\n${log}`

console.log(msg)