The Classic Arduino IDE 1.0.6 was released on 2014.09.16: https://www.arduino.cc/en/Main/ReleaseNotes#v1.0.6 Please note that this is a request for the small bump 1.0.5 -> 1.0.6, not a request to bump to >=1.5. The latter bump is being discussed in bug #525882.
Now that the bump to 1.8.5 has been completed, I don't think there's any need for the small bump.