Rafael from Extended64.com has discovered something very interesting after running across an xml file in Windows Vista. He discovered 20 different SKU names for Windows Vista. He found the following SKU's:

• Windows Vista Starter
  　
• Windows Vista Home Basic
  　
• Windows Vista Home Premium
  　
• Windows Vista Ultimate
  　
• Windows Vista Pro Standard/SB
  　
• Longhorn Enterprise Server (ADS)
  　
• Longhorn Enterprise Server - IA64
  　
• Longhorn Standard Server
  　
• Longhorn Datacenter Server
  　
• Windows Vista Pro Std/SB/Ent - VL Binding Service
  　
• Windows Vista Pro Std/SB/Ent - VLGeneric
  　
• Windows Vista Pro Std/SB/Ent - DMAK
  　
• Windows Vista Starter Digital Boost - OEM
  　
• Windows Vista Home Basic - OEM
  　
• Windows Vista Home Premium - OEM
  　
• Windows Vista Ultimate - OEM
  　
• Longhorn Enterprise Server - OEM
  　
• Windows Vista Home Basic N
  　
• Windows Vista Pro Standard N
  

That's alot of SKU's. I thought having XP Home, Pro, Media Center, Tablet, N and Start Editions were alot. To be honest, I'm a bit put off if Microsoft intends on having so many SKU's. I don't want to have to spend over $500 just to get the Ultimate Edition so I can have all the features. And that's my biggest concern. Of course none of these SKU's have been confirmed by Microsoft has official so I'm not worried just yet.