Well, not to blow up my premise -- though I am ...
Very basic stat crunching suggests homers are up and doubles are relatively even to last year.
2006 Season Total:
18.50 at bats / double
31.07 at bats / homer
2007 Mid-Season Total:
18.41 at bats / double
34.91 at bats / homer
Of course, this is very simplistic numbers to draw major conclusions from but it would appear the reduction in homers and increase in doubles is specific to my fantasy team only!