Upcoming tour with the SP

As soon as I found out Interpol were doing an Europe tour, I had to get myself ready to book tickets for every city they were playing at. But then I paused. Is interpol the opening band, or is it The Smashing Pumpkins? Don’t get me wrong, The Smashing Pumpkins is a great band but I’m not obsessed with them the same way I am with Interpol, and I think it would be a waste to buy all these tickets just to see an opening act. So does anyone maybe have an idea who’s going to be the main band?