Can I do that?
If not, how do I do it without reinstalling the whole titanium developer app?
1.1 hasn't been released as of right now, but is expected tonight. TI Developer is not the same thing as a SDK drop. when the guys out it up in GitHub, you will download the zip, and then (assuming it's still a manual process), copy the 1.1 sdk folder into your:
Library/Application Support/Titanium/mobilesdk/osx folder along side whichever older versions you previously installed.
Thanks but where to download 1.1 SDK?
I downloaded the zip file at http://github.com/appcelerator/titanium_mobile
but when I examine the file/dirctory structures, they are different from Library/Application Support/Titanium/mobilesdk/osx
Anyway, since it will be release tonight; I will wait for the titanium developer to auto download the upgrade.