Season 3 in Overwatch to start in 1 December few days ago they confirmed the date, season 2 ends on 24 November.
In between is the mid season for balancing and explaining the new changes coming to Season 3.
Another area of Competitive Play Blizzard is trying to improve for Season 3 is how we distribute everybody into their Skill Tiers based on their SR, here is a quote from Scott:
When Season 2 started, we had WAY more players in Gold and Platinum than we initially intended, and way fewer in Bronze and Silver. This was the result of how we calculated your initial SR for Season 2. We tried to partially reset player SR at the start of Season 2, but the results were not as we expected. Instead, below-average players started Season 2 at a higher SR than they should have been given their performance in Season 1. This meant that as they played in Season 2, their SR would often drop to a lower value, which didn’t feel great. It also meant that there was a much wider variation of skill in the Gold and Platinum tiers than we wanted. This is something we want to avoid in Season 3.
Season 3 Rewards should be the same like in season 2 or similar we will update that too once there are confirmed:
With the points you can buy Golden Weapons in Overwatch, and like in season 2 you should get a Icon if you finish your 10 placement games.
There are special rewards if you get to top 500 we can help you with that too here, you will get a icon and spray: