I noticed that Google Maps had an additional feature at the start of the month that I simply shrugged off as an April Fools gag but several days later and it’s still there. The 3D Goggles view shows an icon indicating a figure with and without glasses.
Clicking on the icon gives you the typical blurry appearance with blue/red shadows. Certainly without the 3D glasses, the image looks pretty bad and I haven’t had a pair of 3D glasses to check the view but I can’t really see massive use for this feature and continue to treat it as an extended April Fools gag.