Yes, it already has in some sense. 

Math, science, the metric system, and HTTP to name a few have become universal languages to communicate logic, reasoning, measurements and to propagate communication itself while the spoken and written universally understood language has become English. The world's diversity of spoken languages will continue to shrink over time as large business and mass media (i.e. internet) further permeate and saturate into all corners of the world, creating a feeling of familiarity and boredom throughout the land.

However, one could easily argue that specific domains of knowledge have their unique vocabulary unto themselves creating their own dialect, even if spoken in English as its base.