After reading a lot about Bootcamp, Windows 8 and the support for BC 5.0, I thought it would be nice to share my experiences so far...
I am a Microsoft SQL Server developer and have been using my 2009 Macbook Pro and mid 2011 MacMini for this purpose. I do not run OSX on my machines but just Windows including the Bootcamp drivers. For me this represents the best of two worlds: Apples exquisite hardware combined with the very good Windows 7 and 8 OS.
I have been running Windows 7 for years with no problems and last december made the switch to running Windows Server 2012 as my main OS. This is the server version of Windows 8 and very similar "under the hood".
As said I run just Windows. I simply format my whole HDD (with MBR) using a OSX install on a external HDD of USB stick and then install Windows. After that I install bootcamp. So far I have been using the Windows 7 BC 4.0 version with Windows Server 2012 and this worked fine. The only glitches it had were the non-present on screen display while changing the volume, screen brightness and keyboard backlight brightness. All the rest worked fine (well besides Bluetooth but that is because Microsoft in his wisdom decided that a server OS does not need BT support).
I was very eager to try this out as it annoyed me quite a bit that the OSD for the above settings worked just fine in W7 but not in W8. But then I read that my 2009 MBP was not supported... And indeed, after unzipping the BC 5.0 package I got a message saying:
Bummer. So I decided to digg in a but deeper and went to the folder:
And started bootcamp.msi. And voila:
Bootcamp 5 installs just fine on my "non-supported" 2009 MBP! In order to make it run you have to start it using Administrative privileges in Windows 8
After installing all still worked fine and yes, I do now have OSD for volume and screen brightness controll!
But still not for keyboard backlight... but I guess Apple just left something to be desired for OSX 10.9
Hope this helps!