Can you guys tell me the diff between 1.2 and 1.2b?
Never mind: finally found it:
iXtreme 1.2b
This version is for users who may have lesser quality lasers that have issues reading media. It offers nothing more than a slow-read.
Regarding iXtreme for hitahi: Soon

We are currently testing, and everything seems smooth. The hitachi ixtreme will still need to be ported over to each specific version (v32-79), so that will take a little time, but most of the hard work is over.