Finally. It’s taken more than a year, but reunited college-rock icons The Replacements finally will play a hometown gig this September, as the band has been announced to headline the soon-to-be-razed Midway Stadium in St. Paul, marking the first Twin Cities appearance by the ‘Mats since 1991.

This is almost becoming a regular occurrence: Newly reunited college-rock legends The Replacements have been confirmed for their second festival appearance in as many days this morning at Boston Calling rolls out the lineup for its Sept. 5-7 extravaganza.

Like OutKast, reunited college-rock legends The Replacements seem content to stick strictly to festivals, the latest of which is the just-announced two-weekend Austin City Limits Music Festival in October, where the ‘Mats will join headliners Eminem, Pearl Jam, Skrillex, Beck and, of course, OutKast on the massive bill.

Coachella’s second weekend is under way now, and The Replacements took the stage tonight for the second of the reunited band’s appearances at the two-weekend fest — and dropped a big surprise on the crowd, as Green Day’ Billie Joe Armstrong joined the ‘Mats for part of the band’s set.

The schedule for the webcast of the first weekend of the Coachella festival — running this Friday through Saturday — features a number of great acts, including Bryan Ferry, Pet Shop Boys, The Afghan Whigs, The Cult, Fishbone, the just-added Pixies and more.

Since reuniting last summer for their first shows in 22 years, The Replacements have been nothing if not cagey about their intentions, and that continues with the band’s posting on Facebook this afternoon of an unexplained 12-second clip of “Can’t Hardly Wait” being performed live in an undisclosed recording studio.

It’s perhaps not surprising that The Replacements’ reunion has been a ramshackle affair, with the band playing three festivals last year, and, at this point, slated to perform five more times this spring and summer. To hear bassist Tommy Stinson tell it, that may continue for a while.