Yes. Steam's own calendar is built into your radar, so you never launch into a storm by accident.
- A dot marks Steam-wide events such as Next Fest and the big seasonal sales.
- A star marks a Steam festival that fits your game's tags.
- Steam dates ahead on your Overview lists what is coming up, with a countdown to the Next Fest sign-up deadline.
During Next Fest players are busy trying hundreds of demos, and during the big sales the spotlight is on discounts. Many developers show a demo at Next Fest to gather wishlists, then launch in a calmer week.
Tip: see every upcoming sale and festival in one place on the Steam sales and festivals calendar.