Steam as we know is the largest platform where you can buy games digitally, and surely they always try to make policy that can keep customers loyal amid the competition with another platform.
But you may have noticed about certain trend where many publishers put many signs and information on the cover and images of the games they release.
Yes Steam will try to get rid "misleading marketing" that include review score (from gaming sites), discount listed on the picture, and also awards. Hence in the next few months all the things above won't be seen anymore.
Definitely Steam want to make clear how games publishers can use their marketing strategy right.
The new rules including a games may not add score from Steam or from another media, no awards shown, and cover image can only contain official title or artwork games.
And no discount, plus additional images that show another product.
Moreover, all of kind of promotions above can be found easily on many indie games and games that are published by smaller companies.
Now if you want to play PC Steam games then use https://gaminginsideinfo.blogspot.com/2013/10/best-low-power-graphics-card-for-gaming.html now.