Since a couple years, we haven’t seen many changes in the dedicated server market. Same processors, same traffic deals and harddisk spaces. But with the new Intel processor family, Nehalems, dedicated servers have been cheaper and powerful than before.
The new Core i7 processor is a revolution in the industry, since it brings Xeon’s technology for a desktop usage. It’s still an expensive processor, but within a couple months, its price should decrease.
Also, the Core i5, a cheaper option but not less powerfull, may be a great solution for the common enterprise usages today.