Samsung announced a 16 Gigabyte Solid State Drive (SSD) based on 8 Gigabit NAND chips last May http://www.tmcnet.com/usubmit/2005/May/1146781.htm due to ship last month. So a 32GB SSD based on the new 16 gigabit chip is not that far out there. Initial form factor is no different from disk based drives to ease market acceptance, but obviously, other, thinner form factors are possible and likely if ordered in quantity.
Flash Based Laptops, Sooner Than You Think