It looks like Sony has released yet another Lite-ON based model. It seems that Sony is striving to offer every possible combination of speeds or something... This should be a truely rebadged LTR-52327S whereas the CRX225E was from the 7S series, but was limited to 24x CD-RW writing.
You can find it for sale here: http://www.ht.com.au/Scripts/xworks.exe?PART:L2412
Here's a picture of the box from that site: