According to my calculations:
Wave 1 - Released on July 19th (8 Rares)
Wave 2 - Will Release on August 20th (14 Commons)
Wave 3 - Will Release September 20th (X Uncommons?)
Wave 4 - Will Release October 20th (Entire Release?)
Wave 5 - Will Release November 20th (Entire Release?)
If there is a Wave 6, our Great Lord Aberion pillage your village.
This set is said to have less than 100 cards. A total of 22 cards will be currently released in 2 months. At this rate there will be a minimum of 4 waves. What I see them doing is releasing half of all the cards within each "Preview". Wave 1 - had 8 Rares, consisting of 16 Rares total in Rebellion. Wave 2 - will have 14 Commons consisting of 28 Commons in Rebellion. Approximately 15 Uncommons still need to be released? We don't know how or if they are going to be releasing Epics or Legends as "Previews". We also don't know if they will preview every single card before a full Platinum release, if that is the case, Wave 8 is the soonest the "Rebellion" set will be out. This is excluding the fact that they will preview Epics & Legends. Wave 8 is February 20th, and this is assuming all previews are 1 month apart. So have fun waiting.