According to the JP trackers:
Media Create about a 500k difference.
3DS: 8,089,518
PS3: 8,598,255
Famitsu/Enterbrain about a 450k difference.
3DS: 8,025,672
PS3: 8,471,704
The 3DS should overtake the PS3 before the end of the year. It sold extremely well during the holiday season last year and will most likely do pretty well this holiday season as well. Next on the list is the Wii at about 12.6 million, which should happen next year.
It will be hard to overtake the original DS as it is the best selling system in Japan EVER at almost 33 million LTD. The next closest system is the PS2 at under 22 million LTD. That's a pretty big gap between the the top two positions. The PSP is at 19 - 19.5 million (depending on the tracker).
starcraft: "I and every PS3 fanboy alive are waiting for Versus more than FFXIII.
Me since the games were revealed, the fanboys since E3." 
Skeeuk: "playstation 3 is the ultimate in gaming acceleration"
