The 320 is positioned as a mainstream desktop and notebook SSD, and because it uses the same controller chip as the old X25-M, you're still limited to 3Gbps SATA connectivity. This means Intel is leaving the high-end sector to the 34nm, 6Gbps SSD 510 series it launched late last month featuring data transfers of up to 500MB/s. Still, the company improved its controller and firmware and significantly bumped random IOPS performance with small files on the 320.
According to the official press release issued today, Intel's third-generation drives will be available in 40GB, 80GB, 120GB, 160GB, 300GB, and 600GB capacities at prices of $89, $159, $209, $289, $529, and $1,069 respectively, based on 1,000-unit quantities. Assuming prices don't get bumped too much at retail this could represent savings of up to 20-30% compared to previous X25-M models with equivalent capacities.
All models include a limited three-year warranty from Intel, 128-bit AES encryption and Intel's SSD toolbox plus downloadable Intel Data Migration Software "to help clone the entire content of a previous storage drive (SSD or HDD) to any Intel SSD". You can check out some reviews at: AnandTech, Legit Reviews, Storage Review, and Tech Report.