The CSGO official Twitter account is not really the most active one on Twitter. They have, however, recently been posting a lot more tweets and reactions. Apparently, they have also begun to advertise CSGO content as can be seen in the video below.
If you're interested in the new Horizon Case, check out @3kliksphilip's video where he spoke with the contributors for insight into each weapon's design: https://t.co/VMPz78tWPi
— CS2 (@CounterStrike) August 7, 2018