Be careful and weigh your decision carefully. Everyone has a different opinion on sound quality. There's plenty of posts about this update. You have some that love the increased volume and bass and others, like myself, that find it offensive to our ears. The bass, turned all the way down, still booms even at the lowest sound level. It's on and booming at all times and can't be tuned out. The fact we all have to fiddle with turning the bass down to -6 or lower should be enough to at least let you know the bass portion of the update sucks. And -6 isn't good, it's just the least worst setting most have agreed on.
Personally, knowing what I know now and backing that up with everything that's been posted....if it ain't broke, don't fix it. If you are pleased with the quality of the sound system, wait for the next update. It'll be out eventually and then see how the community reacts. Otherwise you run the risk of doing the TSB and being in the group that hates the sound, or maybe you'll love it. Kinda like gambling. How risk averse are you?