[Inkscape-devel] Clarification of supported image formats

There's a been a few people coming to inkscapeforum.com due to confusion over Inkscapes suggested support for various file formats and I was hoping someone might be able to clarify it for me.

Some release announcements for 0.46 says that it supports importing EPS files, and on the Wiki it's states it can "natively" save as AI - both appear to be incorrect for the Windows platform, and it looks like it might be true under Linux only through the use of third-party software.

Is it safe to say that if filetype is not listed in the save/open dialog then it's not 'natively' supported, for the respective operation, despite what is stated on some sources?

Thanks