If you have an aging-but-not-yet-dead Epic 4G just waiting to be upgraded, maybe now's the time to slap a good ol' dose of CyanogenMod on it. Why now? Because it just got its first official CM10.1 nightly. Sure, you could've been running CM10 for some time, but now you can have the latest build that AOSP has to offer.
With CM10.1 – which is based on Android 4.2.x for those who may not know – you get fun things like lockscreen widgets (so you can finally get in on the DashClock action), Quick Settings, and a few other, less obvious tweaks.