'How I Met Your Mother' Scoop: New deets on the mother of all twists!

That noise you hear is the plot of How I Met Your Mother‘s top secret, game-changing sixth-season premiere thickening as we speak.

Although a Mother rep declined to comment, sources confirm that the Sept. 20 opener will feature—prepare to clutch your pearls—a wedding!

The who-what-where-when-why of said nuptials remain under the tightest of wraps, but I strongly suggest you go back and comb our July 29 interview with exec producers Craig Thomas and Carter Bays for clues. I also urge you to come back here when you’re done and start spewing theories in the comments section.

What are you waiting for? Get crackin’!