This comes to show the certainty Samsung feels about the potential interest in Galaxy S8, and, given that its fans have been flagship-deprived after the Note 7 gave up the ghost, Samsung may have a point. The overall sales goal that the company's forecasters will chase is 60 million Galaxy S8 units, up from 48 million for the S7, and 45 million for the S6. As for the breakdown of sales between the smaller and larger models, the source tips that the OLED display business of Samsung is getting ready to ship 10 million panels for the S8, and 6 million for the S8+.
Samsung may also be shipping more screens for the initial batches, as it is trying to secure oversupply for its own phones, before the OLED iPhone 8 hits the tape later in the year, as those contracts with Apple are perhaps again for millions of units, and Samsung will most likely have to honor them all if Apple's upcoming phone proves a hit.
source: The Investor