Nuance has discontinued the only professional quality speech-to-text product for the Macintosh (Dragon):
I guess that one could have predicted this when Apple started to include a limited version in the Mac OS. Sadly, Nuance (a horrible company) bought up and discontinued all of their speech-to-text competitors.
Many professionals rely on dictation for their work. If you folks think that this is going to impact your use of the Macintosh, I urge you to write to Apple and implore them to use their influence to have this product made available again. Apple has previously paid third party software developers to remain on the Mac platform when they thought that the product was essential for keeping a lot of users in the Mac camp.