After creating a pattern of bolts, there is no way to edit the sketch to change my bolt layout. All that's available are the options within the bolt parameters to change the spacing or edge distances. The "Edit Sketch" button is grayed out when the bolts are selected. It seems that the only way to change the layout is to delete the old set of bolts and create a new one.
I think anywhere else in Revit that you create something via sketch you're also able to edit that sketch at a later time. This should also work with the new Bolt, Hole, and Stud tools.
It's also odd that the spell checker for this idea form thinks "Revit" is a misspelled word!