The difference between the East Asian version (Chinese, Korean and Japanese) with the standard ones lies on the file, which is CJKLayout.pln under folder and a "CJK" folder in Plug-ins. The difference between Middle Eastern version and standard version is none, in terms of number of file or what (At least not I am aware of), except of newer build.
What about balitic and South(south-eastern) Asian languages (South Asian language is Tamil while South East Asian language are Thai and Vietnamese)? Well, they are rarely being released as part of a adobe product. I guess that is a spare to be used in future when they see the business viability to gain that portion of the market share. They might just use 260 if there is a need in CS6 or CS7 or later. I guess the market adoption rate for CE version is too low that they deprecetated it. (But the website did said there is Romanian version for ID CS5, so does that hint the piracy issue is so serious that no trial is given at all for the CE one.) 2b1af7f3a8