The newcomer homepage is a feature to help newcomers get oriented when they first create their account, so they can figure out how to start editing quickly. One component of the homepage is the mentorship module, which encourages newcomers to post questions to an experienced user's talk page.
The newcomer homepage's mentorship module assigns an experienced editor to all new editors from a signup list. In the initial version, the module just says the message, "This experienced user knows you're new and can help you with editing." Our recent user research showed that newcomers wonder, "Who is my mentor? Why am I assigned them?". The module might make more sense to newcomers if mentors can configure a personal message that gets posted to all their mentees (perhaps configurable on the wiki page where they sign up to be mentors), instead of just the standard "This experienced user knows you're new and can help you with editing."
e.g. "My name is User123 and my favorite topics are sports and music. I love to help newcomers get started!"
Here is a mockup of the mentorship module: https://wikimedia.invisionapp.com/share/KUQV2QDJ8A7#/screens/350928124