Is 2.0 not able to be made portable, or is it natively portable (that would be cool)?
Due to the high demand of a portable version. 2.0 will be natively portable.
In the forum topic from below you see what the diference will be between the current version and V2
The current version is not portable but there is a work arround so that you don't have to install the software on the pc or you can try the portable bild of CCleaner.
I use the work arround with is not more then registring the necesseraly DLL's with a Batch script befor starting the CCleaner.exe and when you close CCleaner the DLL's registry's are removed.
you can find more details here
Will there be, or are you considering, a U3 version?
We use to have a U3 version of CCleaner, but he not sending me them. If anyone can make one, please send it.