2GB Memory Modules to Go Mainstream in 2008

@ 2007/02/09
No 4Gb systems for the masses yet:

"Due to limited availability and, consequently, high price-point, 1Gb memory chips are not in high demand among makers of memory modules. As a result, systems with 4GB of memory will be pretty rare in 2007 and are more likely to get more or less mainstream in 2008. The question is whether transition to DDR3 that begins this year has its influence on the amount of memory per system.

Comment from Rutar @ 2007/02/09
Don't most motherboards have 4 slots?