HTC One
If you have an international, unlocked version of the HTC One, then an update to Android 4.3 which includes Sense 5.5 could be rolling out to you shortly.

Several sites are reporting that the 675MB update is now hitting HTC One owners in European countries in Nordic regions as well as Russia and countries in Eastern Europe. HTC Rom developer @LlabTooFeR supplied a screenshot of the update Changelog, which includes the ability to turn Blinkfeed off entirely :
HTC One 4.3 Sense 5.5
As well as tweeting a link to the OTA, for those wanting to attempt the update without waiting.

As usual for Australian Carrier branded HTC one handsets, the wait now begins. Optus has updated their software update page with details on the 4.3 update arrival, advising that the next update will be for Android 4.3 with an expected release in early November. Both Telstra and Vodafone have not listed any information about the update in their recent software update posts.

If you own an unlocked Australian HTC One, let us know if you see the update rolling out to your device.