Looks like the Gallagher brothers are finally ready to make it official and they're giving us a proper teaser with Slane Castle first. Whether you're a die-hard Oasis devotee or someone who's just curious to see if they can actually pull off a reunion without it all kicking off, Monday's announcement is shaping up to be one of those moments the internet won't let you forget. If you've been sitting on Ticketmaster refreshes for weeks, this could be the green light you've been waiting for.