In the intentionally cryptic tweet, Overwatch also mentioned Wednesday, March 6 as a potential date for the skin to go live on the PTR, or possibly for Baptiste to make it into the live game.
Arrrrrrgh... ya free Wednesday?
Don't be a LIVE-lubber and board the PTR as BUCCANEER Baptiste! pic.twitter.com/Y2uqC1aGjV
— Overwatch (@PlayOverwatch) March 6, 2019
There's no set amount of time for how long a new hero has to stay on the PTR. Some, it's a few days, and others spend a couple weeks being tested, so it's difficult to use that to say whether or not Baptiste will be going live this week based on that.
Heroes do usually start getting skins when they go to live servers, so that's a definite plus for those who think Baptiste will go live this week.
Whatever happens, we can be sure something is going to happen with Overwatch's newest character this week, it's just hard to say exactly what.