Yet again, the Rolling Stones have announced a world tour which may or may not be their last. The “On Stage” tour comes two years after their “Licks” tour. The never-say-die rockers will play venues of all sizes, from clubs to stadiums, tailoring their show and set lists appropriately. “On Stage” kicks off August 21 in Boston.http://www.billboard.com/bb/daily/article_display.jsp?vnu_content_id=1000913496