I search a v4.5.X.XX for 8700R in italian lamguage. Could you help me?

The 4.5 release linked above in our Sticky Notes is the only current version released... have you tried it? I honestly don't know what languages it includes.

I think, like from description, that it has only the Chinese language. Or not?

You can usually tell what languages are included by the file name:

8700M_...... means "MultiLanguage." This would include Italian.
8700_ALLLang_....means "All Languages." This would include Italian.
8700CJK_.... means Chinese, Japanese and Korean. This would not include Italian.
8700E_... means English only.

All releases include English.

But the 8700M version, for 4.5, exists it?

Could you send me the link in this case?

Sorry, there are no links for the 8700 OS in a MulitLanguage version. The only available release is an East Asian Language (and English) package.

I have installed several OS versions that had "_Chinese" in the filename/title and English has always been present as an option.

Wirelessly posted (BB 11020)

Correct. As I posted above, all releases include English.