The Bitcoin network has been running for a few years now, with roughly over 14 million units injected into circulation by miners. In 2016, the community surrounding the currency has a major event taking place, in which miners will receive half the reward for mining Bitcoin after July 27, 2016 at 12:30:03 UTC. If calculations are exceeded by computational power, this date could change. Currently, a miner gets 25 Bitcoins per block, and the next halving is expected to cut this reward to 12.5 units. At present, the Litecoin network experienced a block reward halving, and has shown some unusual trends after the cut.
https://news.bitcoin.com/great-bitcoin-halving/
