With the metro going in there is that possibility, but one cannot predict the future. Prices of places listed today also semi-reflect the fact that the metro is going in. If you are going to be there for some time then yes it is a good investment, real estate overall is a good investment over the long-term. There is the possibility that you might be able to sell the place in a few years once the metro is up and running for a profit, but one cannot say that for-sure.
That is a speculative purchase. If you are purchasing to live there for many years, your thought process should not be overly concerned about short-term gain. Unfortunately, there is no way to effectively predict future value.