Not to sound like an idiot (I don't use apple software or products), but what's an iTunes session? Acoustic or what?

A Neighborhoods/new record-heavy setlist on the next tour with their "explosive" singles included (WMAA, ATST, Rock Show, etc), as boring as those songs are to me now, still need to be in the set (unfortunately) for people that haven't seen Blink ever, or often. Hoping they go 18-20 on their next tour!

Hope we make sure to have this iTunes session posted on here when it's released. Wonder if they release it right afterwards or take a while to do so. Hopefully sooner rather than later!