Not sure of the original source, but these details look like they are from a retailer.

The fifth wave of Titans Return toys should have the following assortments...
(these are main cases - Revision cases, if any, will be different)
(BOLD are the new figures for wave 5... also referred to as wave 3 2017)

TRA Generations Titan Masters ast w3 17 assortment
TRA Gen Titan Master Apeface x 3
TRA Gen Titan Master Overboard x 3
TRA Gen Titan Master Autobot Ptero x 3
TRA Gen Titan Master Ramhorn x 3


TRA Generations Legends Titans Return ast w3 17 assortment
TRA Gen Legends Cosmos x 4
TRA Gen Legends Seaspray x 4


TRA Generations Deluxe Titans Return ast w3 17 assortment
TRA Gen Deluxe Wolfwire x 2
TRA Gen Deluxe Windblade x 2
TRA Gen Deluxe Misfire x 2
TRA Gen Deluxe Twintwist x 2


TRA Generations Voyager Titans Return ast w3 17 assortment
TRA Gen Voyager Octane x 1
TRA Gen Voyager Blitzwing x 1


TRA Generations Leader Titans Return ast w3 17 assortment
TRA Gen Leader Overlord x 2
Nothing there is new, but it lets us know what sort of distribution/ratio of new toys we might see in stores here, IF we get these wave cases here.