Darth Vader trilogy set between ROTS and ANH?

It was rumored right after that Disney bought Lucasfilm and announced the ST that they were already developing a fourth trilogy and it would be about Darth Vader and his early adventures under Palpatine sometime after ROTS. But it was rumored on other sites like Marketsaw that there would be not one but two sequel trilogies(Episodes VII-XII) with the first ST about Luke and co's further adventures and the second ST about a female protagonist named Skywalker(Will Rey turn out to be Luke's daughter and the fourth trilogy will be about her further adventures after Episode IX and the Big 3 are long gone?) But that's another thread.

It was rumored on the website MovieWeb in 2012 that a fourth trilogy was already in development and it would be about a younger Vader and his early adventures in infamous black armour. Perhaps in a Vader trilogy we would see Vader get his own TIE fighter(the one that Vader uses on the Rebels in ANH) and have him fight in some awesome space battles in deep space against the young Rebel Alliance or space pirates and/or remaining Jedis in their starfighters and tries to kill the remaning Jedis hiding in other worlds in uncharted areas of the galaxy the Unknown regions perhaps?

It's been rumored recently that an Obi-Wan trilogy is in development and Ewan Mcgregor will return as post-ROTS Obi-Wan and have adventures in other parts of the galaxy and likely in deep space in two films and one entirely on Tattoine watching after young Luke. What is the rumored Vader trilogy and the recently rumored Obi-Wan trilogy merged into one trilogy where perhaps Vader and Obi-Wan are lead characters and Obi-Wan races across the galaxy to save remaining Jedis on the run from Vader and perhaps have a lightsaber confrontation between their infamous one on Mustafar where Anakin was burned in ROTS and Obi-Wan's fateful one in ANH. This trilogy would come out around 2021.