My L lens just came in the mail today. The date code is UV0316, which means that it was manufactured in March 2007. Has anyone noticed that Canon changed the Image Stabilization from I/0 to On and Off? I like this MUCH BETTER! I used to have this lens and had sometimes paused to think if "0" is on or off. lol. Not sure when Canon started this or if anyone has noticed this, so I just wanted to share!