New Extensions site

Just saw that the old Add-ons site is migrating to a new extensions site. I haven't done many extensions due to the fact that it has been difficult for people to upload them at times, and packaging has been an issue for me. I don't do enough to warrant getting a paid certificate. Will the new site be easier to upload? Can you still use the Adobe packager for this? Can you post paid extensions using a self cert rather than a paid one?