Hey, what do you know. They are bringing the recent updates of EX Extreme charts from the Future Tone Arcade machine to both Future Tone and the Deluxe version, and even free of charge it seems! Now the game is "complete" again! :-)
Release date: Thursday, April 19th (so in just a few days!!)
PS4「Project DIVA Future Tone」&「FT DX」に高難易度譜面が追加されるアップデートファイルが配信決定! | 週刊ディーヴァ・ステーション | セガ
Future Sound: Ai Kotoba, Hatsune Miku no Gekishou, Magnet, Rolling Girl
Colorful Tone: Jugemu Sequencer, Soiyassaa!!, Time Limit, Hanamai Tsukuyomi Tan, Mousou Sketch, Leia
EDIT (I wanted to make a new post but it was auto merged, come on after so many days one should be able to do a new post...)
Surprised nobody seems to care about that here. Just tried the new stuff and well wow, apart from a few doable ones most of the new charts are really really hard, almost impossible to do well with the regular controller and one is literally impossible all the way through (Hatsune Miku no Gekishou, of course). I'll try eventually with my Hori controller but man...wished they would think of the controller when they know they bring it to the PS4 version.
Still, it was free so I guess it's fine.