Hi Guys, I contacted dell support via Twitter. They pointed me to this driver. It worked for me. But I had to manually run the setup.exe file in the WLAN folder (see image below) because I came across some compatibility issues with the driver for the Bluetooth device. My Bluetooth is working fine so I didn't bother. I went into this directory and ran setup.exe: C:\dell\Drivers\P58H7\WLAN Hopefully this works for you guys. If not, I recommend you contact dell support via twitter. The response was fast. [IMAGE]    
I've installed the available drivers in the appropriate order for Windows 8 and it's not even showing up as an option on the new settings. FN/F2 does turn on/off Bluetooth, and I get the same icon notification that I got on Win 7 that Wifi is turning on and off. I'm assuming that we're waiting on Intel for drivers?
Inspiron 17R 5720/Windows 8 Wifi