I see a lot of questions on the boards and with the recent shows and images surfacing online, I thought having everything in one place could help, at least as a reference.
Firstly, this line is basically Combiner Wars 2.0 with Prime Master Integration, and the Prime Masters use the very same ports as the Titan Masters from Titans Return.
Here are the 5 different classes and their suggested prices (which has increased from Titans Return for a few classes). Please remember that these are Hasbro's suggested prices to retailers based on the average retailer's cost and subsequent markup. They can be higher or lower depending on the retailer.
Prime Master: Approx. Retail Price: $5.99There will be 12 in total comping out in the line (as far as we have been told) and each one will be a small robot which turns into a symbol representing on of the Primes. Everyone of these small robots have the same size and playability as Titan Masters. They each come in a with a small suit that homages a G1 pretender and which can turn into a weapon. The Prime Masters can also plug into the combiner hands and feet when they are used as armour, and they can also plug into the Matrix found in each leader class figure.
Legends Class: Approx. Retail Price: $9.99These are very similar to the legends class we got in Titans Return where most have a port to attach a Titan/Prime Master. There is no indication that these will turn into weapons, like some did in Combiner Wars. Their interaction in this line's ecosystem is with the Prime Masters.
Deluxe Class Approx. Retail Price: $19.99 Every Deluxe class toy in this line can turn into an arm or a leg to combine with a voyager torso. Each Deluxe comes with a combiner hand which can plug into its body as some sort of shield or power up.
Voyager Class Approx. Retail Price: $29.99Every Voyager in this line can turn into a combiner torso to combine with the deluxe arms and legs. They each come with two combiner feet which plug onto their forearms as power gauntlets, as well as an engima of combination.
Leader Class Evolution Approx. Retail Price: $49.99To our current knowledge, every Leader Class in this line has an evolution gimmick (hence the word's inclusion in the size class name) where a smaller robot combines with parts of his alt mode and turns into a larger robot. Each of these so far are based on actual evolutions that have happened in Transformers fiction, turning a character into his evolved form. Each comes with a matrix which is Titan/Prime Master compatible.
Titan Class Predaking (price yet to be revealed, though $150 price point is assumed)
This toy has yet to be fully revealed but from what we know it will be made of the 5 Predacons, and sport the traditional G1 colours. Each Predacon will all be around the voyager size, much like the previous Constructicons. His interaction in this line's ecosystem is that he can store both a matrix and the enigma of combination (and thus, any Titan/Prime Master)
Wave Breakdown and Time FrameHasbro goes by season for product releases, so I will translate that into an approximate time frame to give an idea of when the toys could be seen on shelves.
Wave 1: Between December 2017 and March 2018Prime Master: Liege Maximo and Skullgrin Decoy Armor, Micronus and Cloudburst Decoy Armor, Vector Prime and Metalhawk Decoy Armor
Legends: Beachcomber, Dinobot Slash, Skrapnel, Windcharger
Deluxe: Autobot Jazz, Dinobot Slug, Dinobot Swoop, Dreadwind
Voyager: Grimlock, Starscream
Leader: Rodimus Prime, Optimus Prime
Wave 2: Between March and June 2018Prime Master: Alchemist Prime and Submarauder Decoy Armor, Alpha Trion and Landmine Decoy Armor
Legends: Battleslash, Roadtrap, Tailgate
Deluxe: Blackwing, Dinobot Sludge, Dinobot Snarl, Moonracer, Terrorcon Rippersnapper
Voyager: Terrorcon Hun-Gurrr, Elita-1
Leader: Rodimus Unicronus, Optimus Prime
Wave 3: Between June and September 2018Prime Master: Quintus Prime and Bludgeon Decoy Armor, Megatronus and Bomb-Burst Decoy Armor, Solus Prime and Octopunch Decoy Armor
Legends: Cindersaur, Outback
Deluxe: Terrorcon Blot, Terrorcon Cutthroat, Sinnertwin, Autobot Jazz
Voyager: Inferno, Grimlock
Leader: Optimal Optimus, Rodimus Prime
Wave 4: Between September and December 2018Deluxe: Firestar