Adobe recently released their 'blank font'. It is essentially a font which contains no glyphs and is basically a css hack to stop the flash of unformatted text when using webfonts.
I wrote a long time ago about how to cache the font files when using @fontface. That method can be used in conjunction with this to create the best user experiance for your site.
Caching font files is obviously a good idea so you don't have to load them on every page view. What the blank font does is crate a fast loading font (due to lack of content) which can be used as a fall back before the font is loaded.
Blank may have filled a (hacked) gap.
Read more about it here: http://blogs.adobe.com/typblography/2013/03/introducing-adobe-blank.html and https://github.com/adobe-fonts/adobe-blank/