To Update or Not To Update, That Is the Question

I just learned via Twitter that an update is coming to Windows Live Essentials 2011.  That impacts me the most with Windows Live Photo Gallery and Windows Live Writer. 

I’m not sure that I am going to like it.  I won’t know unless I try.  What will it fix?  What will it break.  Can I roll back if it doesn’t work for me. Ah, yes, the real question: CAN I ROLL BACK IF IT DOESN’T WORK FOR ME?