X360s support 15:9 resolution (1280x768), 16:9 resolutions (720p, 1080p, 480p), 5:4 resolution (1280x1024) and 4:3 resolutions (640x480, 800x600 and 1024x768). Obviously if they supported 16:10 resolutions I would be pleased, though doesn't seem so.
Edit: Forgotten 1366x768 (16:9). :smile: