Target Center sent the rumor-mill spinning among local music lovers today when it announced that it's going to announce a "major concert" at a press conference Thursday morning. This highly unusual move -- the arena didn't even do a press conference to reveal Garth Brooks' record-setting 11-show run last month – signals that it's either a top-tier music act, or the show itself is something unusual. Here's our line on who the performer(s) might be:

U2. The Irish rockers just announced additional shows in the 19 cities already confirmed on their 2015 all-arena tour, so the next step will be announcing more cities. There are a couple gaps in the North American itinerary where some Minneapolis dates could be added (early June and early July). Or else any local stop would likely fall on a second U.S. leg after the European trek ends in mid-November. Lord knows the lordly Bono likes to do things with fanfare, too, so a press conference seems suitable. Odds: 1-1.

The Rolling Stones. Keith Richards and others around the band have hinted that they will keep touring in 2015 after a trek to South America in February. For its "50 and Counting" tour in 2013, the band signed a new deal with concert-promotions giant AEG Live, which is the company that manages Target Center. Of late, the band has been hitting arenas more often than outdoor venues. The Stones are certainly worthy of a press conference, especially since their last Twin Cities date was back in 2005 at Xcel Energy Center. Odds 2-1.

Another hat act. After Garthmania last month, the arena will probably get excited about any other mainstream country-music star headed their way. Jon Bream reported last month that two other major tours are headed to local stadiums next summer, the Luke Bryan/Florida Georgia Line match-up and a Zac Brown Band trek. Perhaps one of those is getting re-routed indoors instead. Or perhaps it's the rumored road union of married stars Blake Shelton and Miranda Lambert, both of whom are already down to play We Fest next summer. Or maybe it's Garth again. Seriously. Odds: 7-1.

AC/DC: Despite their confluence of troubles, the Aussie rockers are going ahead with plans to tour behind the new "Rock or Bust" album next year. Unless original singer Bon Scott has been found alive in Tasmania or something like that, though, they don't seem to merit a press conference in Minneapolis. Odds: 20-1.

Prince. As we spelled out in our recent article on the "most overdue concerts," the local kingpin hasn't played a big local show since his 2007 gig at Target Center, and he's coming off his twofer album release in September. He could also fall into the "something unusual" category to merit the press conference – although it's certainly not like him to talk to the press. Especially at 10 a.m. Odds: 30-1.

johnwrightphoto.com, Star Tribune

The Replacements. Ah, where would the local concert rumor mill be without a mention of the local boys, even after they finally played here on their reunion run in September? There was one juicy little tidbit going around after their Midway Stadium concert that an inquiry had been made about Target Center's availability on New Year's Eve. However, announcing such a show just a few weeks out seems tardy even for those guys, besides the 100 other reasons this doesn't sound feasible. Odds: 500-1.