Last September Google announced that they would eventually drop support for NPAPI in Chrome, a key technology behind the Google Earth plugin. Then in September this year, they released a 64-bit version of Chrome without support for NPAPI and by extension, the Google Earth plugin. However, it was still unclear exactly when support would be discontinued in the 32-bit version. We also wrote a post showing you how some sites have decided to drop the Google Earth plugin in favor of other technologies with a more certain future.
On Monday, the Chromium Blog posted a more specific timeline for the phasing out of NPAPI. See the full details here.
From January 2015, the plugin will be blocked by default, but users will still be able to enable it.
From April 2015, it will be much harder, although still possible, to use the plugin.
From September 2015, NPAPI support will be permanently removed from Chrome and it will be impossible to use the Google Earth plugin in Chrome.