[About which your humble narrator is extremely excited.][link] iOS has supported SVG fonts for awhile, but SVG fonts are much larger in filesize and lower quality as of yet.
[link]: http://www.zeldman.com/2010/11/26/web-type-news-iphone-and-ipad-now-support-truetype-font-embedding-this-is-huge/ “Web type news: iPhone and iPad now support TrueType font embedding. This is huge. – Jeffrey Zeldman Presents The Daily Report”