No, If you haven't found Out. I ordered one 39.99 thinking it was and found out it is not. The new one might be though as its designed for travel. Should it. YES!!! I corresponded with JBL and was told I could buy a european adapter for $30 not really happy and not sure what I am going to do. THe compact is multi voltage and very small.

No, you will need to purchase a seperate power supply if you intend to use it overseas.

This adaptor comes along with the product will work only in 120V. You have to buy an 230 to 120V adaptor for this.

This works with iPod touch. I am guessing it might with iPhone too. Doesnt the iPod touch have the same interface as iPhone.

It probably does not, as the iphone has a different shape than ipods and this is an older product, I believe.
It's possible that you could modify the "cup" that holds the ipod using a dremel tool if you are DIY inclined. But can't guarantee it.