What kind of muscle development is best for speed? By speed I mean how fast a muscle can provide movement- say for a punch or kick or any technique.

Is a huge, bodybuilder, vein popping, type of muscle the best for providing speed because it is the strongest, or is a lean defined Bruce Lee type better?

Or, is it something other than the just the muscle that provides for speed?Is it other parts of the body, tendons, etc that build up speed? Can muscle memory obtained through katas and other practice be developed to a high level without any relation to having excessively strong muscles?
I was thinking that most people you see that are really experienced in martial arts or are masters do not look like Arnold in his prime, although a lot of boxers and MMA fighters look like body builders.

What are you using this speed for?

Speed varys through a lot of factors. Obviously things like excess fat can slow people down.

Bodybuilders dont train for speed and therefore aren't likely to be as fast as someone who does.

Explosive lifting is a way to develop muscle speed as it helps develop fast twitch muscle fibres which are used during fast movements.

Performing techniques or punching and kicking. Or in a non martial arts sense, just moving around and performing tasks as part of a sport.

i would have to say lean, toned, optimal muscle performance, along with cardio and mental agility.

Just an educated guess.

what is explosive lifting?

basically when you lift fast some good lifts for explosive power are power cleans,hang clean, squats, overhead press, high pulls, and the power snatch.

there are alot more but basically anything fast.

When training for speed, light weight training is recommended I believe.

light weight training improves muscular endurance so you can keep going for ages but yeah I would go with the explosive lifting idea