According to a Costco coupon book, it looks like the Samsung Infuse 4G will be launched on May 12th. For its part, the membership club will be offering the phone at a $30 discount. As we reported, Walmart is planning on selling the model for $178.88 which works out to a price of about $150 for Costco.
AT&T and Samsung have announced that the Samsung Infuse 4G will launch May 15th for $199.99 with a signed 2-year contract. The phone is an HSDPA Category 14 device which means that download speeds can range as high as 21Mbps. The handset is rated HSUPA Category 6 which allows for maximum upload speed of 5.76Mbps
source: Engadget (1), (2)
Based on this Costco coupon book, the Samsung Infuse 4G and its 4.5 inch display will be launched May 12th