This news basically echoes info we have heard before, but since it comes from a new email sent out by Google devs, it bears sharing. Also, it indirectly suggests that Android 5.0 Lollipop will begin pushing out on November 3rd. Google devs is sending out emails to 3rd party Android developers letting them know their Android 5.0 Lollipop tweaked apps will be ready to go November 3rd on the Nexus 9 tablet.

The picture above is a screen shot from one of these emails. It's important to note that this simply repeats what Google said previously in another developer information email. Here's what they said before,

Starting November 3rd, Nexus 9 will be the first device available to consumers that will run Android 5.0. Therefore, it is a great time to publish on Google Play, once you've updated and tested your app. Even if your apps target earlier versions of Android, take a few moments to test them on the Android 5.0 system images, and publish any updates needed in advance of the Android 5.0 rollout.
As you can see, this simply means that Google is on track to keep the schedule they promised before. We will keep you informed if any further info breaks.

Source: AndroidPolice