Short answer - if you want to take advantage of the new mining techniques present in the 3.3 update - yes, you'll want an abrasion blaster, a seismic charge launcher and the pulse wave analyser. You'll also probably want a detailed surface scanner (which is an optional internal for your ship, not a utility module). I'd take just one of each - two seismic charge launchers is overkill, and two blasters or pulse wave analysers won't give you any additional return.
Longer answer - Whether or not you use all of the new stuff is dependent on what kind of mining you want to do with the update. If, for example, you want to hop on the "deep core" mining train where you break apart asteroids for the resources inside them, then you'll want all three of the items you listed. You'll use the detailed surface scanner to look for any "hot spots" in the planetary ring (while in supercruise), and then once you arrive inside the ring (as in, you've dropped out of supercruise), you'll use the pulse wave analyser to look for specific asteroids that have high/lucrative resources. Once you find one, you'll use the seismic charge launcher to break apart the asteroid, and then you can use the abrasion blaster to shoot off any remaining "surface" deposits on the interior of the asteroid that weren't loosened by the seismic charge. It's simple once you do it, but you might want to look for a few YouTube videos of how to set up the fire groups and use the equipment before trying it to cut down any frustration. There are things to look for and a technique to it that's best learned by watching someone do it.
The choice between "fixed" or "turreted" will be determined by how you want to mine - I only mine alone (or in a wing), so my understanding is this - the fixed are your normal, go to mining equipment. If you're flying your ship solo, and are going to mine on your own (like I do), I'd choose the fixed variant. However, if you're going to mine with a crew (the multicrew thing we have where other players can join your ship), then turreted is the only way the other player can actually participate. If I'm wrong about that, someone please correct me!
So, if you're solo, choose fixed, and if you're big on multicrew, choose turreted.
And fixed means exactly what it is - the blaster and launcher are "fixed" into position and you have to aim them by moving your ship (just like fixed weapons) - they're not gimballed and won't automatically "track" anything.
Hope this helps!