That is true, anytime a coin has a significant reduction in the block reward it's inevitable that the price will rise up in the following days. I wouldn't count on it doubling overnight, but it should reach that amount before long.
It is something like delayed effects from block halving because the rise of price will depend upon several factors.
Internal changes of coins, in the specific case of Digiwage, block halving to come.
External factors, including movements of Bitcoin, news on the market (FUDs everywhere or not), etc.
Anyway, Digiwage is likely a good project which has fast, solid growth, and its price has big probability to take off.