I think it is just now hitting the streets. Here is a place that is selling them and at an ok price too it seems. I know there aren't that many authorized yamaha dealers on-line so make sure you check if they are and if not, see if they will cover the warranty.
http://www.avperfection.com/scripts/...?idproduct=287
and at last Yamaha has put it on their website.
http://www.yamaha.com/YEC/products/DVD_CD/DVDC950.htm
As for the Onkyo and the 750, I think ergonomically the Onkyo, the Yamaha sounds like a pain. Sound-wise they both have gotten great marks, but the 750 sounds like it will have the better picture. So I would go the 750. Actually you could go for the 950 and get the HDMI and DCDI prog. scanning, for the same price as the Onkyo piece.
I just hope they didn't include the slow disc access, poor remote, and bass management, and menus on the 950.