In fact, what's so notable about the computer programming language landscape over time isn't so much its diversity and adaptability, but rather its inertia. COBOL and Fortran, the longtime standards for business and scientific programming respectively, remain in use albeit less widely so than at one time. Object-oriented programming, which encapsulates data together with the associated functions that operate on that data for more structured and maintainable code, came into initial widespread use largely through extending an existing language, C. C itself, originally designed as a language for programming systems at a very low level, was put into use for all sorts of application programming tasks for which it was arguably not very well-suited.
Does this change with cloud computing or, to be more precise, with an increased emphasis on browser-centric application access, big and unstructured data processing, and the development of a huge mobile ecosystem?
Public platform-as-a-service clouds introduce new possibilities to broaden the Web programming landscape. However, to the degree that an application programming interface (API) is limited to a single provider, moving an application elsewhere will require at least some porting. As a result, while we do see some providers offering APIs that are specific to a hosted environment, there's a strong argument for the flexibility of application portability across on-premise and a variety of hosted clouds.
The overall picture I see is one of change, but change that is mostly evolutionary and that doesn't involve a lot of radical overnight change from existing models.
As Al Gillen, program vice president for system software at market researcher IDC puts it in reference to a survey I helped put together for VMworld in San Francisco at the end of August: "thought it very revealing that "yesterday's'' frameworks were target for "tomorrow's" apps." He went on to write that "tools will evolve and utilize new programming frameworks, then use will evolve over time, not so revolutionary."