Users most likely to notice the change reside in countries where there are few online news resources or where multiple languages are traditionally spoken. Despite the heavy influx of people from Spanish-speaking countries, Google says US users will primarily see English. So will users from the UK. However, if you sort your results by date, you may see sources from a foreign language.
If you type your query in another language, then your results will be from that language no matter where you're typing from.
In June, Google announced that it was testing new features in Google News, as "part of the evolving state of online journalism."
What do you think of enabling cross-language search in Google News?