....I don't agree with that...Theme developers should update it right away if there are any fatal errors or errors that make the site unfunctional as quickly as possible and not wait until all the other fixes are in...It's called a hotpatch..
I updated all my themes for my customers the same day 2.0 came out...I dropped everything and left out the other items that I was going to add...I believe they should do the same for you guys.