You don't have to wait for the announcement from Microsoft for non-subscribers. Windows XP SP3 is officially available. After download, rename the file to xpsp3.exe. Follow the steps below to slipstream SP3 and create a bootable Windows XP with SP3 CD.
- Copy your XP CD contents to c:\xp
- Extract SP3 into c:\sp3
- Combine XP with SP3
- Create a bootable XP with SP3 ISO image using nLite 1.4.5 beta 2 with c:\xp. You don't have to remove or add anything.
- Burn the image to a CD using any CD burning software.