No.  There is no tour announced or plans for Ms. Cyrus to tour the world.  But a swelling of twitter support on this topic might just compel the superstar to put plans together.  She did just host SNL a few days ago so this kind of support might do the trick.

R E T W E E T if you want a MileyWorldTour2011 <3
@Trendeh
paulie fenty