When do bands normally come to asia? that's the question. Europe no chance it would be winter and snowing in parts when they finished the US. I know with Australia Nov-Feb we get all the bands come then just this year we have Pearl Jam, Nickelback, Offspring, Blink and Green Day.
If they wanted to they could take a month or so off after the US. Then head to asia/oz be back in time for a break before recording for Alterbridge. It's unlikely but we just have to wait and see towards the end of the tour they may announce other dates