I dont know if this has been announced, but Spring Awakening is defiantly performing at the Tony's! My friend was part of the costume crew when the show was still on Broadway and today he posted a pic on facebook at the Tony rehearsal for Spring Awakening.
CarlosAlberto said: "Is there a reason they weren't invited to perform to begin with? Is it because it's a revival?"
They were always invited, it was just a question of whether they wanted to put up the money to perform. (The Kickstarter saga is a whole different conversation.)
I'm pretty sure OP meant "definitely," not "defiantly." I was confused for a minute too.
1. characterized by defiance; boldly resistant or challenging:
a defiant attitude
Origin of defiant: French
A Chorus Line revival played its final Broadway performance on August 17, 2008. The tour played its final performance on August 21, 2011. A new non-equity tour started in October 2012 played its final performance on March 23, 2013. Another non-equity tour launched on January 20, 2018. The tour ended its US run in Kansas City and then toured throughout Japan August & September 2018.
Usually the nominees for Best Musical and Best Revival are the ones expected to perform with others sometimes being able to perform in order to sell their show (If/Then for example).