Samsung is looking to bolster production of chips for DRAM and other products, and as such will be tossing $1.9 Billion at their manufacturing facilities. More than half will go to increasing the size of their memory facility, and the remainder will go to boosting DRAM production. They expect that over the course of the next year, demand for DRAM from Samsung will nearly double, following Powerchip Semiconductors estimate of 65 to 75% growth:

It forecast global DRAM shipment growth to be up 65 percent to 75 percent in 2007 from the previous year ... Samsung said earlier in January it expected its DRAM chip shipments to grow 90 percent in 2007, up from 38 percent in 2006.
A few reasons were cited for the increased demand, such as the pending release of Vista for home use, which may result in many people upgrading their PCs.