An external drive Blu-ray for the Xbox 360 from Christmas?

The site Xbit Labs says that Microsoft will release a Blu-ray for its external game console Xbox 360, despite official denials of the Redmond giant.
The Blu-ray for the Xbox 360 would even be ready to be delivered, and Xbit Labs says they should arrive on the market during the Christmas holidays. The price would range from 100 to $ 150. The aim would be to continue the pressure on the sales of PS3, to crush competition.
Toshiba-Samsung Storage Technology would then manufacture the player, the same manufacturer at the origin of the previous HD-DVD drive external Xbox 360.
The question is whether the introduction of the Blu-ray external enough to affect sales of PS3. The strategy of HD-DVD drive external just had already proved fruitful, and 100 to 150 dollars more could cool a lot of users for Xbox 360. This is a good bet contradictory at Microsoft, which focuses on the Blu-Ray to thwart Sony, or rather its content competitor in the victory of his face in HD format HD-DVD?