Samsung is not requiring that entrants put a timeline in their plan. If you do use one, it can be a simple T+6months, for example. Samsung also is not asking you to make assumptions on what your idea would cost. Instead, they want you to figure out what value your business plan creates and compute how much you could pay for flexible displays to make your business plan commercially viable.
At the sourcelink is a number of rules that you need to read before submitting your business plan. If you get your plan in by September 15th, you will be eligible to receive feedback from Samsung about your plan. The final submission date is October 6th. The best business plan wins $10,000 while there is a $5000 second place prize and $2500 for third place. Good Luck!
source: SamsungFlexibleFuture via SamsungHub