Which suggests that the global number of Steam users (75M last year) has grown again adn we are just being in the middle of the year.
The biggest surges of concurrent players usually always come during the Winter sales. So expect 8.5-9M of concurrent Steam users by the end of the year : )
Which will be translated into the global number of Steam users of 80M more or less. 5M of new PC gamers in ONE year.