Atlona Technologies today announced that the company is now shipping its AT-HD620 HDMI to Mini DisplayPort converter, which is capable of up-converting video signals to dual-link resolutions up to 2560x1440. For HDMI users, the unit solves compatibility issues with Mini DisplayPort displays, such as Apple iMac 27-inch or 24-inch monitors, by scaling any HDMI input to match their native resolution.
Discuss "Atlona AT-HD620 HDMI to Mini DisplayPort Converter Preview" here. Read the article.
Atlona just released the DP300 for those who want to save money and don't need the MDP switching.
I got one and I can say first hand, it makes the PS3 look crazy sharp on a 24" Cinema display.