Google+ Photos app for Chromebooks coming soon to Mac?

Back in June, Google released a new Google+ Photos app for the Chromebook Pixel and noted that the slick app would also be coming to other Chrome OS devices. However, today we received some proof that the Chrome app might be soon making its way to other platforms including Mac and Windows. The Google Operating System blog notes that the app has recently made its way to the Chrome Web Store with the app’s description describing auto-upload features for Mac, PC, and Linux:

The app is available in the Chrome Web Store. If you switch to French (or any language other than English), the app’s description changes and it reveals something interesting:

Google+ Photos will currently instantly upload all .jpg files from the default pictures folder on your computer every time it is run. These directories include:

Windows XP: C:\Users\yourname\Pictures

Windows 7: C:\My Documents\yourname\My Pictures

Linux: /home/yourname/Pictures

Mac: /Users/yourname/Pictures

Unfortunately, the app is not yet working on Mac or Windows. After installing, launching it gives the following error message:

The app is still available to download through Google’s Pixel site and is currently listed as “only available for the Chromebook Pixel,” but the description seems to indicate versions for Mac and PC are on the way.