Amazon.de and Amazon.com have both added information about new Pokémon Bluray's that will be released in April of 2012. The Pokémon Forever Bluray will be released in German and will include Movie 4 and Movie 5. Details about that Bluray have been added to our DVD/Bluray Database: http://www.pocketmonsters.net/dvd/1520.

Pokémon Collection which only has basic information on Amazon states that the release date is April 3, 2012 and the run time is 330 minutes. The currently released Pokémon Collectors Set on DVD: http://www.pocketmonsters.net/dvd/1400 has a run time of 330 minutes, exactly what this new Bluray set has. It seems that the new Pokémon Collection Bluray will be Movies 4-7 to match that DVD collection. We will add the set to the database once there is confirmation of this.

Sources:
https://www.echobridgeentertainment.com/dvd/Pokemon_Collectors_Set_78949
http://www.amazon.com/Pokemon-Collection-Blu-ray-Artist-Provided/dp/B006ZL1P34

Don't know is it true, but:
http://www.blu-ray.com/movies/Pokemon-The-complete-original-series-Blu-ray/79551/
1760 min - ~80 episodes => season 1

Also, Movies 1-2:
http://www.blu-ray.com/movies/Pokemon-The-First-Movie-Blu-ray/51422/
http://www.blu-ray.com/movies/Pokemon-The-Movie-2000-Blu-ray/51965/

Doubtful these are real. 20 episodes a Bluray, dual audio, homemade looking covers (each bluray had the same disc id, perspective wrong on the spines). I think anyone can add new discs on Bluray.com so I wouldn't consider that an official source unlike Amazon.

Also, they're listed as having both English and Japanese audio, a rather doubtful claim if there ever was one.