Yes. This is True and below you can find a fully detailed explanation of the current situation. Check this in their our search results here. As a Google Plus user I first noticed this 6 months ago and thought it was a glitch. Problem is it wasn't, and nothing changed since then.
I call this: the "Google +" Branding Bug.
Let me explain.
Each brand may be searched, in a search engine, by various brand name variations. In our case the most important are: