This post is specifically around copying items from DTM to Launch. To update this post on the progress, the migration tool is in an open beta right now and can be opted into by visiting the link below:
Not yet. The team is hard at work on a migration tool that will allow you to migrate as much of the DTM library as possible to Launch. Data elements and Rules will be included in this migration tool. Stay tuned on the community for the announcement when that comes out.