Flipcart is one of the biggest & useable marketing online platform.Many thinks they are making people fool by announcing bitcoin.but look at the bright side, they are already taking online payments. May be in years, they will take bitcoin as a payment. Its all about time, who can say what will happen in future
There are some businesses that are teasing this kind of integration, they just timed it in a silly event so as to test if the people were going to green lit this kind of thing or if they really want it to happen. I think that Flipkart is definitely going to integrate bitcoin in their pay system but @Shawn20 is right, we don't know who can say what happens next.