For the MB and MBP it looks like SATA2 is supported. Scroll down to "Serial ATA Drive Interface". You may need to go to "next page" for MB notes:
Serial ATA Drive Interface
"The 15-inch MacBook Pro comes with a 5400 rpm (optionally, a 7200 rpm) Serial ATA (SATA) Gen-I (1.5 Gbps) disk drive. The SATA disk drives operate through an AHCI 1.1 controller that supports advanced SATA-II features such as Native Command Queuing (NCQ) and PHY power management."
http://developer.apple.com/documentation/HardwareDrivers/Conceptual/MacBook_0605/index.html
hmmm....price-wise, no word at all yet that I can find. Not even any other guesstimates beyond what Multimedia said. But it is already being put in some of their laptops eg.
http://uk.computers.toshiba-europe....RINT_WITH_BACK&PRODUCT_ID=108695&DISC_MODEL=0
Yep, def a typo. It's 9.5 mm thick. Straight from the horse's mouth:
http://sdd.toshiba.com/main.aspx?Pa...0000279f/818200000d07000000010000659c00002ea4
"MK2035GSS
2.5" HDD 200GB*
Toshiba Storage Device Division (SDD), the industry pioneer in small form factor hard disk drives (HDDs), introduces the 200GB 2.5-inch HDD based on Perpendicular Magnetic Recording (PMR) technology. Toshiba's second-generation PMR offering features the worlds highest areal density at 178.8 gigabits per square inch and the highest-capacity drive on the market in the standard 9.5mm mobile PC format**.
The 200GB dual-platter drive offers enough capacity for portable video recording and editing, gaming, music and other multimedia applications. The MK2035GSS weighs only 98 grams and features lower power consumption compared to the traditional 3.5-inch HDDs. Toshiba's 200GB HDD provides mobile PC manufacturers the ideal combination of capacity and power to manufacture and market mobile PCs as a replacement for traditional desktop computers. The MK2035GSS incorporates the Serial ATA (SATA) II interface and is ATA-7 compliant, supporting high transfer rates of up to 150 megabytes per second.
** As of June 5, 2006"