Firefox version 1.5 released

Yesterday Mozilla released version 1.5 of [http://www.mozilla.com/firefox|Firefox]. I immediately downloaded it and installed. I did not find any great improvement on first look. May be I have do a lot of research to find out. Under encoding I saw Hindi, Gujarati and Gurumukhi. Don’t know what is the use of these settings as most web-sites take care of the language by UTF-8 encoding. May be Mac needs these settings as the they are listed as Hindi (MacDevanagari), Gujarati (MacGujarati), etc. Someone from Mac domain can explain better why these settings are there.