You probably all know the answer to this question, since we covered this countless times. But John Mueller of Google made a super short official Google from Google saying some search algorithm updates roll out globally and some are regional or language specific at first.

Heck, we covered how the product reviews update is still English only as of this morning. Panda launched English only at first, then expanded to all languages and regions. Penguin launched fully globally on day one. Each algorithm update is different but Google prefers to launch these algorithm updates globally, John said.

Here is what John said in this video:

Here is the video if you want to watch it:

Forum discussion at Twitter.