In the coming months, a Google Account will be all you’ll need to share content, communicate with contacts, create a YouTube channel and more, all across Google. YouTube will be one of the first products to make this change, and you can learn more on their blog. As always, your underlying Google Account won’t be searchable or followable, unlike public Google+ profiles. And for people who already created Google+ profiles but don’t plan to use Google+ itself, we’ll offer better options for managing and removing those public profiles.
The company also announced the change on its YouTube blog saying, "YouTube will no longer require a Google+ profile when you want to upload, comment, or create a channel. If you’re happy with everything as it is now, then just keep on keepin’ on. If you want to remove your Google+ profile, you’ll be able to do this in the coming months, but do not do it now or you’ll delete your YouTube channel (no bueno)."
The comments you make on YouTube will now appear only on YouTube, not also on Google+. And vice-versa. This starts rolling out today.
More details on the change can be found at the link below...