Those of you that are sporting CyanogenMod 10 will be happy to know that they are incorporating their own file manager, appropriately named CM File Manager. It maintains the Holo UI and of course leverages root capabilities. So far it looks like it won’t have any network capabilities like the ability to access any of your network drives over WiFi. I’m sure this will be added at a later date, but if it’s something you need, you won’t be able to dump ES Explorer or File Expert just yet.
It was already forked into their project last night, and should show up in the next round of nightlies.