Scripting is the future. Long build and deploy steps are anachronistic to both industry trends and maximizing productivity. This trend has been developing for many years.
Where once truly compiled languages (like C/C++ and not Java/C#, which are “compiled” into an intermediate form) accounted for the vast bulk of development, now they the domain of the tools we use (Web browsers, operating systems, databases, Web servers, virtual machines, etc). They have been displaced by the “semi-compiled” managed platforms (Java and .Net primarily). Those too will have their niches but for an increasing amount of programming, they too will be displaced by more script-based approaches.
GWT reminds me of trying to figure out the best way to implement a large-scale, efficient global messaging system using telegrams where everyone else has switched to email.
(Link: Why GWT Isn’t the Future of Web Development ~ C for Coding)