As discussed, Eminem is going on a co-headlining tour with Rihanna surrounding some festival appearances, which was already set to hit the NYC-area on August 16 at MetLife Stadium. They've since expanded the tour, adding second dates in each city, including another MetLife Stadium (8/17) show the next day. Tickets for the 8/16 show are currently on AmEx, LiveNation and Facebook presale (password: "MONSTER"), with a Ticketmaster presale starting Monday (3/24) at 10 AM and the general on-sale starting Friday (3/28) at 10 AM. Tickets for the 8/17 show (same link) are currently on AmEx presale with Ticketmaster/Live Nation presales starting Monday at 10 Am and the general on-sale starting Friday at 10 AM.
Updated dates are listed below...
Eminem -- 2014 Tour Dates
August 1-3 Chicago, IL Lollapalooza
Thursday, August 7th Los Angeles, CA Rose Bowl*
Friday, August 8th Los Angeles, CA Rose Bowl*
Sunday, August 10th Squamish, Canada Squamish Festival
Saturday, August 16th East Rutherford, NJ MetLife Stadium*
Sunday, August 17th East Rutherford, NJ MetLife Stadium*
Friday, August 22nd Detroit, MI Comerica Park*
Saturday, August 23rd Detroit, MI Comerica Park*
* - w/ Rihanna