Get this while it's still available! I covered this a couple of weeks ago and it went away so fast that even the Sherpstress didn't get in on it (she did wait almost 18 hours!). She didn't make that mistake again and her Platinum status posted within moments. Once you have signed up make sure you add it to Award Wallet - you can sign up for that free here.
Here is my original post that states what benefits you will receive from Platinum Status with Accor, and why even if you won't stay at an Accor hotel soon, it's even more important to sign up for this and status match.
If you have read this far, you have waited too long. GO SIGN UP NOW!