1) Dont know
2) Yes he is doing, just waiting for announcement.
3) Yes thats also almost confirmed... I heard Maneesh is writing the script and Shimit amin is helping him..
Hollywood director Brett Ratner (who is also a fan of SRK) wanted to work with Shahrukh in an Action packed film. SRK gave Aditya's name. Adi suggested Dhoom4.
But Brett was asking too much price and wanted to make Dhoom film in English without Indian touch.. So it didn't worked out and Brett left
But the news of Dhoom4 with SRK taking serious toll and Script is been written or will be written keeping SRK in mind - My Trade friend
Si lets see what happens.. SRK needs a Universal appealling film catering to all and now JHMS FAN Raees types .