Bought a mount yesterday evening (a European timezone), woke up seeing the announcement this morning. Kind of feels like 1,000 zen through the drain :( On the positive note: Good initiative to lower these prices!
The problem seems to have worsened recently, at least for me. Enough so to try some common solutions and I quickly found out that setting up a gaming profile for Neverwinter in my Antivirus software, yields visible results. So if you have a virus scanner that allows for such type of tweaking, it's worth a try.