What a damn good console. First console I personally saved up my own money to buy. My guess is Sony sent out a large last shipment to Japan, enough to last them for the rest of FY2012 and maybe slightly beyond, while it will still continue to ship PS2s to the smaller markets for another year or so. I believe they are still shipping to the US, as well. Considering the PS2 was still selling decent for a 12 year old console, this is most likely to make way for the production of the PS4. 2013 is looking more likely to be the launch year.
Oh, and all hail the king of ALL consoles. (DS included. )