Other World Computing (http://www.macsales.com) is offering third
party 1066MHz DDR3 EEC memory upgrades up to 32GB for the new Mac Pro
“Nehalem” models announced by Apple last week.

OWC says the Mac Pro memory upgrades fully meet Apple Design
Specifications, including specific required thermal EEPROM, board
design, chip components; and are fully RoHS and JEDEC
compliant. Pricing for the upgrade kits can be found here:

Internal hard drive upgrades are also available from OWC with savings
of up to $540 versus same size factory installed upgrades, the
company says.