Chris Foresman over at ArsTechnica comments on the upcoming font changes to OS X Snow Leopard.

Among the many under-the-hood changes to OS X are the removal of Strong and Light anti-alias font Display settings. Medium will be the only option.

And much to the delight of many designers, Apple is apparently getting rid of their proprietary dfont format. Taking its place will be a number of fonts in the TrueType Collection (.ttc) format. How font management applications like Suitcase Fusion will support this remains to be seen - however the .ttc format has been supported by the Mac OS since 8.5, according to Ars.