The new Turboku launcher allows for faster and more elegant migration of Heroku apps to Fly.io without requiring data migration. It uses flyctl integration instead of third-party services, making the process significantly quicker. Users can now deploy their Heroku app using flyctl turboku with an app name and a token. The Turboku launcher also supports webhook updates on new Heroku deploys and maintains the connection to Heroku's Postgres for faster access.