Steam Summer Sale 2018 is set to start tomorrow
https://www.pcgamer.com/steam-summer-sale-2018-is-set-to-start-tomorrow/
The word on the street, courtesy of the Steam Database Twitter account, is that the legendary Steam Summer Sale will start—gasp!—tomorrow.
"Mysterious" Steam cards appeared on the site last week, bolstering the likelihood that the leaked date is accurate, but of course it is: Steam sale date leaks are as regular and predictable as the sales themselves, and I can't remember the last time a leaked date was wrong. Precedent also backs it up. Last year's Summer Sale started on June 22, and in 2016 it was June 23. You might see a pattern emerging there.