Samsung issued press release yesterday -- 5/7/07 -- announcing 5 models along with US pricing and release dates:
http://www.gottabemobile.com/SamsungQ1UltraUMPCSpecsAndPricing.aspx
Details are 5 models. All have 1 gig ram. All use new battery type -- lithium prismatic, which promises 4.5 hours run time with standard battery.
Q1U-EL -- base model with 1 gb ram, 40 gb hdd, no hsdpa, and slower processor than other 4 models. but with windows vista home premium. retail price of $799 (USD), and release date of june 2007.
Q1U-XP -- 1 gb ram, 60 gb hdd, no hsdpa, and windows xp tablet, but same processor as top 4 models (including this one). retail price of $1149 (USD), and release date of june 2007.
Q1U-V -- middle model with 1 gb ram, 60 gb hdd, no hsdpa, and windows vista home premium. again same processor as top 4 models (including this one). retail price of $1199 (USD), and release date of late may 2007.
Q1U-CMV -- second to top model with 1 gb ram, 80 gb hdd, with hsdpa, and windows vista home premium. same processor as top 4 models (including this one). retail price of $1499 (USD), and release date of august 2007.
Q1U-SSD -- top model with 1 gb ram, 32 ssd, with hsdpa, and windows vista home premium. same processor as top 4 models (including this one). retail price of $1999 (USD), and release date of august 2007.
models to be carried by all major vendors -- best buy, circuit city, fry's, new egg, etc.