In the Star Wars universe, where Faster Than Light (FTL) travel is already a staple through hyperspace technology, the introduction of FTL weapons would significantly alter warfare, strategy, and societal development:

Tactical Impact:

• Surprise Attacks: FTL weapons could allow for undetected attacks, enabling fleets to strike from seemingly out of nowhere. This would make traditional defensive strategies like layered defense systems less effective, as an enemy could bypass these by entering combat space directly from hyperspace.

• Hit-and-Run Tactics: With the ability to fire from hyperspace or just after exiting it, ships could engage in guerrilla warfare, striking valuable targets and then disappearing before a counterstrike could be organized.

• Defensive Measures: New defensive technologies would be developed to counter FTL attacks, possibly including hyperspace tracking or interdictor fields to pull ships out of hyperspace. This might evolve into an arms race between offensive FTL weapon capabilities and defensive hyperspace interdiction technologies.

Strategic Impact:

• Shift in Power: The ability to project power instantly across galaxies would change the balance of power. Empires or factions with this technology could control or threaten vast territories without needing a large presence in realspace.

• Supply Lines: The need for traditional supply lines would diminish for those with FTL weaponry, as they could strike with less reliance on nearby bases or supply depots. This would affect the strategic importance of certain planets or systems.

• Planetary Defense: The threat of FTL bombardment would necessitate robust planetary defense systems capable of detecting and neutralizing threats before they exit hyperspace, leading to innovations in shield technology, hyperspace sensors, and perhaps even time-dilation fields.

Social Impact:

• Fear and Deterrence: The psychological impact of potentially instant, unstoppable attacks would be immense, leading to widespread fear or even paranoia. This might foster an era of peace through mutual deterrence, similar to the Cold War's MAD doctrine, but on a galactic scale.

• Cultural Shifts: Societies might become more isolated or insular, focusing on self-sufficiency or developing alliances for mutual protection against FTL threats. There could be a cultural shift towards valuing personal security over exploration or expansion.

• Ethical Considerations: The use of FTL weapons would raise significant ethical questions about the right to weaponize space travel. This could lead to interstellar treaties or conventions similar to the Geneva Conventions, aiming to limit or outlaw such weaponry.

• Economic Changes: Economies might shift towards defense industries, with significant investments in technologies to prevent or counteract FTL attacks, affecting trade routes, commerce, and possibly leading to economic isolationism or protectionism.

Speculative Technology:

• Hyperspace Missiles: Imagine missiles that travel through hyperspace and exit near or inside their target, bypassing most known defense systems.

• FTL Beam Weapons: Lasers or particle beams that could be fired from hyperspace to strike targets in realspace almost instantly, with the beam traveling at light speed once it exits hyperspace.

• Temporal Disruption Weapons: Although speculative even for Star Wars, weapons that could disrupt time or cause localized temporal anomalies could be considered, affecting both the tactical and strategic landscape in unforeseeable ways.

In the Star Wars universe, where technology often dances with the mystical, the implications of FTL weapons would not only be a matter of physical warfare but would also likely intertwine with the Force, leading to philosophical and metaphysical debates about the nature of conflict and balance in the galaxy.