March 4, 2009 8:06 am New High School Musical In The Works The fourth film of the franchise premieres next year with a new cast. Plus, the Britney Spears tour kicks off in New Orleans. And, Robin Williams cancels shows on his tour due to shortness in breath. US & World Videos 1:41 Prince William shares brief update on Princess Catherine to well-wishers at UK visit 1:28 LAPD dismantles protester encampments at UCLA 1:36 Arizona Senate repeals 1864 abortion ban 3:37 4.1-magnitude earthquake shakes Corona 1:40 Democrats say Big Oil misled public for decades about climate change