Kamen Rider W movie will be titled “Kamen Rider W Movie FOREVER: A to Z Gaia Memories of Destiny“. The synopsis originally quoted via JEFusion : (spoiler)
Kamen Rider W Forever A to Z Next Generation Gaia Memories! The devil of eternity! Farewell, Kamen Rider W!?
Suddenly it was scattered all over the Futo City, 26 Next-Generation GaiaMemories from “A to Z”… Then suddenly appeared, brutal criminals. Their natural shape, not even a human—.
Meanwhile, Phillip with mysterious woman named Maria, look at the trace of the mother. Futo City, the biggest crisis hitting Kamen Rider. Formidable ambition of the enemies. Double, Accel, will they both be able to help all Futo people!?
Huge swirling conspiracy, revealed the shocking truth after another. Shotaro suffered a terrible pinch, if there any reversal of last resort? Prayers of the people in your heart, warm bond of friendship as a weapon? Feel the wind of 2 as 1 Kamen Rider!!
“Phillip with mysterious woman named Maria, look at the trace of the mother.” Maria character in question is Maria S Cranberry (Aya Sugimoto), International Secret Military Research Institutions member who pursue criminal across countries (In this case the “brutal criminals“, NEVER). Rumour said she is Shroud and if true, then my previous guess was (almost, since we don’t know if she’s really the mother or just has similiar face) right \^^/ Looks like W and Accel will face 26 dopants in a shot, what a terrible but it’s common for Heisei kamen rider to fight a ton of devils on their own movies. Just example,
Kamen Rider Faiz: everybody are Orphnoch. (Paradise Lost)
Kamen Rider Blade: a ton of albino cockroaches plus some released Undeads. (Missing Ace)
Kamen Rider Kabuto: OMG Worms invasion! (God Speed Love)
Kamen Rider Den-O: all of them. (it has many movies)
Kamen Rider Decade: all of all of all of them. (All Rider VS Dai-Shocker)
Leader of NEVER will be kamen rider Eternal. Another members will use T2 version of W gaia memories such as Metal, Luna, Heat, Cyclone and Trigger. When fighting Heat T2 dopant, Shotaro will fight alone using kamen rider Skull’s Lost Driver and his own Joker memory to henshin into kamen rider Joker. Also in fight with Luna T2 dopant, W will receive assist from the next issued rider, kamen rider Ōzu. New form of W, CJXG will also be featured.
From wikipedia, those 26 T2 Gaia Memories are known as
Accel, Bird, Cyclone, Dummy, Eternal, Fang, Gene, Heat, Ice Age, Joker, Key, Luna, Metal, Nazca, Ocean, Puppeteer, Queen, Rocket, Skull, Trigger, Unicorn, Violence, Weather, Xtreme, Yesterday and Zone.
In movie the dopant forms may come in different shapes. All of them look like normal purified Gaia Memories. In episode 43, Kazu Jun is seen holding a briefcase of 26 T2 Gaia Memories. Foundation X, place where he works, developed those T2 by continuing Shroud’s research.