Answer:
The English language has never stopped and will never stop developing. It can change quite quickly, but its changes often pass almost unnoticed.
The development of English has always served to enrich and empower the language; it becomes more useful more accessible to larger numbers of people day by day.
Because the changes to English, as to any other language, are brought about by common usage, that is, each new word, phrase or usage comes into being because you and I accept and adopt them. This is how English developed, and how it will continue to develop. You or I might use a brand new word tomorrow which by the end of the year could be appearing in online dictionaries.
English, like other languages, is ultimately a language owned and operated by its people, and it will go on improving and making life richer as long as there are people to speak it.