Back from August, YouTube giving selected partners the ability to brand themselves in much better way on their YouTube channel in order to match with their Google+ profile soon. The company has announced that now YouTube lets you link your channel with a Google+ profile with keeping your channel name as same as it was.
Google had said the following:
In the coming weeks we’ll launch the option to link your channel with a Google+ page, which will allow you to use your channel name (even with spaces in it!) as your Google identity. And yes, the advanced Google+ page management features that enable up to 50 people manage a single Google+ page, or a single person to manage up to 50 Google+ pages, will also work for channels that are linked with Google+ pages.