SCEI made an announcement in reference to Japan no longer shipping the 20GB and 60GB PlayStation 3 configurations.
"We have already stopped shipping these in the US and have been focused on the 80GB and 40GB configurations which are currently at retail," the company said in a statement.
"As we've said, we will also continue to read and evaluate market trends and communicate with consumers to determine appropriate configurations for each territory."
The 40gb model was introduced last November and in the US where the 20gb has also been discontinued - the last few were in great demand.
Sony release a 40gb US model in October but this doesn't play older PlayStation 3 games.