Google Voice 0.1.5 was released and then quickly pulled down, for no apparent reason. However, it is back and said to be compatible with OS 5.0!
Like we mentioned before, with all of these apps becoming compatible with OS 5.0, it only leads us to believe that the speculated release dates for OS 5.0 devices are true.

Check out http://m.google.com/voice to get the Google Voice.