Late last night came the news from 'How I Met Your Mother' star Alyson Hannigan that May 13 season finale "Something New" may well introduce the mother after all, though little we've seen from the episode indicates that Barney and Robin end up married by episode's end. The latest sneak peeks from Monday's season 8 finale similarly avoid any major reveals, but at least give us ‘Happy Endings‘ star Casey Wilson and ‘Key & Peele‘s Keegan-Michael Key! Preview Monday's legendary 'HIMYM' finale inside!

With a ninth and final season guaranteed, 'How I Met Your Mother's season 8 finale "Something New" remains "something" of a mystery itself, juggling a great deal of mythology balls with relatively little attention paid to the upcoming wedding. The Monday episode will see ‘Happy Endings‘ star Casey Wilson and ‘Key & Peele‘s Keegan-Michael Key guesting as another couple that tarnishes Barney and Robin's premarital bliss, while Marshall and Lily inform his mother of their upcoming trip, but what major reveals can we expect?

CBS has released the first clips of Monday's finale, neither of which feature any fallout from the ending of "Something Old," but could well pave the way to a major upset by season' end. Meanwhile, Josh Radnor teased Ted’s state in the final episode, saying:

He has focused for so long on meeting someone. Now he’s feeling hopeless. He has mixed feelings about where he is in life, where his friends are, and how the wedding might change things. His best friend is marrying his former girlfriend. That’s complicated, no matter how you cut it.

We're on pins and needles to find out what actually goes down in the finale, but in the meantime check out two sneak peeks of 'How I Met Your Mother's "Something New" below, and give us your predictions in the comments!

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