The Galaxy S4 Google Play Edition started its Android 4.4 update yesterday, a little later than many of its owners would have liked. For those who are eager to get KitKat on their expensive AOSP phones and don't want to wait for the rollout, we've got a download link for the manual OTA update ZIP file.
Those of you who are Nexus veterans know how this goes: download the file on your PC and use ADB to reboot into recovery, copy the file over, and then flash it. Alternately you can download it directly to your phone, though the file is over 250MB, so you may want to hop onto a handy WiFi network for speed or data limit considerations. (We don't have a GPE device handy for a full guide, so check your favorite user forum if you need precise instructions.)
If you've already unlocked and rooted your phone, you can flash the file via the custom recovery of your choice.