DOL -> RVL

I have noticed that on Gamecube hardware the id # is DOL-xxx. The name of the file we now use for homebrew is .dol. On Wii hardware, the id # is RVL-xxx (for ex. the wiimote is RVL-003). Will .rvl files be used for advanced homebrew in the future? Please reply to this post so i can know. Thanks!

No, there's a difference between the .dol executable files and the hardware ID.
The Gamecube's code name was Dolphin and the Wii's was Revolution, so that's where DOL and RVL hardware IDs come from