Cyanogen previously announced that an installer app was going to be coming available in the Play Store. The initial announcement came back in mid-September and at the time word was the installer was going to arrive sometime in the coming weeks. We later saw the folks at Cyanogen go looking for beta testers and it seems the testing phase has wrapped. As of today, the CyanogenMod Installer app is available from the Play Store.
Steve Kondik of Cyanogen Inc. has said the goal of the installer is to "allow more users to experience the benefits of CyanogenMod, without the hassles of technical guides and concerns associated with the process.” And to that point, the CyanogenMod Installer app pairs with a PC app and is said to allow the user to install CM in "a few clicks."
The Installer app has arrived as version 126.96.36.199 and will work on Android devices running 2.3.3 or later. The app in the Play Store is described as being the companion for the CyanogenMod Installer (on Windows) and as such, it will "provide your device with the latest version of CyanogenMod, a custom Android OS."
As for Windows, that means something running Vista or later and otherwise, this process will wipe your existing data. Again, using this will perform a factory reset and wipe all existing data on your device. Once up and running though, these new CyanogenMod users can expect a feature rich replacement to their stock firmware. Not to mention, built-in OTA updates that include new features and security fixes.
Anyway, that all having been said, the CyanogenMod Installer app can be found in the Google Play Store right now. The Windows companion app hasn't been made available just yet, though the folks at Cyanogen have said that will be live and available within an hour or so.
[Update] The Windows app is now available on the www.get.cm website.