Intel has announced some information regarding their new 4-series chipsets that are going to be released this year. They have released pricing information for their X48, Q45/Q43, P45, G45/G43 and P43 chipsets, the majority of which are due in the next few months.
The chipsets range in price from $34 at the low end (the P43) to $70 at the high end (the X48). Performance and compatibility of the chipsets varies as well. The priciest of the bunch, the X48, supports a 1600MHz FSB and is the X38's successor. Supposedly, it'll be here within the next couple of weeks. At the lower end, chipsets like the P43 only support 1066Mhz FSB.