New Rules Reference says

When an ability instructs a ship to execute a specific maneuver, it resolves only the "Execute Maneuver" step of the Activation phase.

emphasis added

Why this does NOT mean that a K-wing can't drop a bomb before executing its SLAM

1. These rules were obviously written before wave 7. (List of bombs does not include conner, ion, or clusters)

2. The SLAM action does not instruct you to perform a specific maneuver (think Daredevil). Instead, SLAM instructs you to choose a maneuver.

FAQ will be needed to clear this up but I think the design intent is clear that a ship can drop a bomb before a SLAM maneuver.

For what it's worth, I think you're 100% right about their intent, but with a tournament scene as intense as X-Wing's, the scrutinizing of the rules is nearing Star Fleet Battles proportions!

Unless we are being trolled, there is no bombing before a SLAM which seems stupid and dumb to me but oh well. Look here.