Hi Brandi, the verticals will remain roughly as you see them now on maven.io, and already include Hub sites (e.g. Delishably under Food). Not sure what you meant by repopulating, could you elaborate? As for the improved editor for Maven publishers, that's still in "beta" on several sites and rollout is dependent on feedback and bug fixing - but we anticipate weeks not months to expand the list.
What are the plans for repopulating the channels - or are there plans for that? Will the vertical channels remain the same or will that all be restructured with the addition of HubPages' publishers? What is the time frame for rolling out the new robust publishing tools that Sarah spoke about?