surely the libraries should have been left out of the new version
You got it wrong. Libraries included with Arduino 1.0 obviously are up to date. He was talking about 3rd party
I guess it depends on what the definition of "included" means.
Whether it means provided with the IDE tools or wither it means included in the users sketch build.
An interesting thought is that the IDE could have been made smart enough to "notice" or detect
older pre 1.0 libraries by looking for things like the use of "WProgram.h" and issue a warning/error to the user rather
than let them see a string of compiler errors wondering what went wrong.