On Mondays and Fridays, the Main Page includes a section where an introduction to one of Wikipedia's featured lists is displayed. The current month's queue can be found here. The lists appearing on the main page are scheduled by the featured list director Giants2008.
To appear on the main page, a list must already be featured. For more information on the featured list promotion process, please see Wikipedia:Featured list candidates, and the featured list criteria. In addition to being featured, a main page blurb must be drafted, which introduces the subject of the list. Main page blurbs are roughly 1,000 characters in total length, with no endlines, reference tags, alternate names, or extraneous bolding, although the link to the specified featured list should be bolded. You can submit a list at Wikipedia:Today's featured list/submissions.
At the moment, lists are scheduled by the FL director or the FL delegates, although we will eventually be devising a community-based system for selecting each day's list. We encourage editors to submit and review as many blurbs as possible. If you notice a problem with an upcoming main-page featured list, please leave a message talkpage here.