While they have pushed it back from their usually April Fools day price increase (maybe recognizing the irony) it will happen again this year as usual.
Several vendors have compiled lists but here is the one from Toolnut: http://www.festoolproducts.com/festo...ease-2017.html
If you are still waiting on a Pro 5 and the $50 voucher note you can buy the other tool now and use the voucher when the Pro 5 arrives and avoid getting part of the voucher eaten up by the price increase.