I overshot my OG today because I boiled off more than I anticipated. Will this affect the IBU's in the finished beer? I was shooting for 1.056 and ended up with 1.062.
What it will affect is the IBU/SG ratio. It's not a huge difference though so I wouldn't worry about. If you really want to have the exact OG you have in your recipe, you could add some top off water so that you hit your OG>