Yesterday's rise on active cross selling in yen signals the correction from 108.62 has ended last week at 106.71 and a break above 108.37 would signal the upmove from 104.95 (January '08 low) has finally resumed, bring a re-test of said top and then towards 109.00.  
Below 107.45/50 would prolong choppy trading and yield pullback towards 107.00/10 but aforesaid support at 106.71 should limit downside.