Cheap laptop for sc2?

hi im looking for a laptop to play sc2 in high... its for school and gaming.

im probably buying the laptop around june/july so i have some time to wait...

and im looking for a laptop about 15.6" and lower, and the cheapest i found was $1100... with mobile radeon hd 5870.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

if sandy bridge laptops come out would the laptops be cheaper? or just the same price? and would there be alot of sandy bridge laptops by july?

Thank you!