The names of the following functions have changed since version 2.0:
Old name: New Name:
SP CanSpeak SP Can Speak
SP SpeakString SP Speak String
SP SpeakText SP Speak Text
These changes were purely cosmetic, but since version 1.0b2 was only a trial version it shouldn't pose any major problems. If you already implemented it, it forces you to reconsider the code you wrote, which isn't a bad thing either now there are more sophisticated functions and commands available.
Version 2.0 and 2.1 users:
Please read the History chapter and the descriptions of the functions which are changed or added.
I also recommend to read all Design chapters since most of them have changed.