I am running a MacBook Pro 13" i7 Late 2011 and have had no problems with the DVD on the Windows side even before the 5.02 Drivers were released.
In My Windows 8 Control Panel > Device MANAGER
The seventh item down is DVD/CD-ROM drives
Expening this item by clicking the arrow to expand the device clearly shows my DVD as a MATSHITA DVD-R UJ-8A8 ATA Device.
Windows should be showing something if you are using DEVICE MANAGER under the Control Panel in Windows
In the BootCamp Windows Support Software - BootCamp5.0.5033 you downloaded from Apple
Locate the BootCamp > Drivers > Apple directory (folder)
There will be a file there titled AppleODDInstaller64.exe right click this file and select Run as administrator.
Let us know if this helps.
I was having same issue here!
I found this solution:
If you go to start menu just type Device Manager.
-Go to View and choose Show hidden devices.
after I did this my DVD/CD ROM drives appeared and my DVD drive apperead listed as
OPTIARC DVD RW AD -5690H ATA DEVICE , but greyed out.
If you click on it you can search for drivers, but Windows says I have the latest required ones.
Then go to Google and search for drivers of your drive.
Install , and restart.
Should be working now!