Probably not. ACS has been around for quite awhile. They are vast team of people from kernel makers, devs, themers, and misc. specialties that make up what they call ACS.
They are some of the best we have available to us on the Epic 4g.
Thanks for your support, Paul! Indeed, we are a large team, including ROM devs, kernel devs, themers, and more. We're on the Epic 4G, the Evo, and the Galaxy Indulge (where we're leading the charge to full customizabilty). The [ACS] tag in a thread title indicates that a release is from one of our members - and I like to think it's a mark that guarantees quality in both usability and support.
It also means you can join us for support with that release at any time at the IRC channel in my signature.