Yes, I believe that it will be a sustainable field. That is not to say that there will not be some "corrections" in the market from time-to-time.
I assume that you are wondering if you should get a software engineer or computer science degree? If so, I would say yes and go ahead and pursue it.
Employment for graduates with a CS degree should have on average better opportunities than some other degrees.
Areas of demand right now are Big Data, Internet of Things (IOT) advanced algorithms, etc.
Source: Quora