Mystery no more.

On a live chat today, Dana White announced Shane Carwin will take on newly signed heavyweight submission specialist Jon Olav Einemo. Although he didn't announce the when and where, it's been rumored the bout will take place on June 11 in Vancouver at UFC 131.

Carwin will be be making his return after nearly a year-long layoff following his arm-triangle loss to then heavyweight champion Brock Lesnar. The big man dominated the first round before his massive muscles could no longer get the oxygen needed to operate properly and gave way.

He vowed to return stronger and better than ever, which he was initially set to do at UFC 125 against Roy Nelson. However, "The Engineer" went under the knife to repair an ailing neck so "Big Country" was put into a match-up against Frank Mir, instead.

Now we finally know Carwin's next opponent.

During the previously mentioned live chat, Dana White described Jon Olav Einemo as such: "He's from Norway. He's 6 foot 6, and he's the Abu Dabi submission champion." 

He's also a Golden Glory fighter who hasn't competed in mixed martial arts since 2006, a first round tapout victory over James Thompson. The lone loss on his 6-1 career record came at the hands of Fabricio Werdum all the way back at PRIDE 31.

Is this a worthy opponent for Carwin just one fight removed from challenging for the heavyweight title?

UFC 131 is shaping up to be a blockbuster summer event, featuring a main event of massive proportions when Brock Lesnar and Junior dos Santos collide for the right to face Cain Velasquez for the heavyweight championship.

Mark Munoz is also booked to face Demian Maia, while Kenny Florian will make his featherweight debut against wily scrapper Diego Nunes.

As always, stay tuned to MMAmania.com for any updates to this still-developing fight card.