Many of Dell's most popular printers are supported natively in Windows 8. In other words, you won't need to install a Windows 8 driver for many Dell printers.
On Dell's Microsoft Windows 8 Compatibility with Dell Printers page, any printer listed as Windows 8 compatible will not need a Dell-provided Windows 8 driver because Windows 8 will recognize and install the appropriate driver automatically.
Dell printers listed as Not supported may or may not have a Dell-provided Windows 8 driver. Check Dell's standard support site, linked below, for a Windows 8 driver for that printer model.
A number of models of Dell color laser printers, monochrome laser printers, and inkjet printers are fully compatible with Windows 8. I expect you'll find Dell-provided Windows 8 drivers for any other popular printers that aren't natively supported in Windows 8.
