Twitter officially launches 'Twitter Blue,' its new subscription service

"Yes, the rumors are true," reads a tweet from Twitter's official communications team . 

The rumors are about Twitter's often talked about paid subscription service. Twitter unveiled the new subscription tier, Twitter Blue, on Thursday. It is rolling immediately in Canada and Australia.

That's right, Canadian and Australian Mashable readers. Twitter is launching this service's "first iteration," exclusively for you.

So, what's included?