Bill Brown has uncovered some interesting Slashdot comments by an Apple employee about Spotlight and future Apple's future plans. (Ed note: it's unclear whether As Seen On TV (ASOT) is indeed an Apple employee, but even if he/she isn't, the thoughts are still interesting.) In this comment, ASOT talks about the future direction for Spotlight, Apple's new finder (not Finder, but it seems clear that as Spotlight matures, it will become the de-facto way people use OS X), specifically about speech-to-text capabilities:

Link