Up to 100,000 MGS4 bundles for Japan
According to this IGN story, between 80,000 and 100,000 units of the 40Gb MGS4 PS3 bundle are to be made available in Japan.
No word on how many we're going to see in Europe as yet. In case you missed it, the Euro MGS4 PS3 bundle was announced at the SCEE PlayStation Day yesterday.