The Connect App just showed up on Google Play Store in Australia a day or two ago.
I successfully updated my T5 True Wireless firmware last night.
It was pretty buggy and took about 3 tries, but it's now complete and all running properly.
I had to uninstall/reinstall Connect to get the final confirmation that both earbuds were on the new firmware.
And I THINK that the BT connection is a bit more stable. I walked around the house forgetting they were in my ears, where as they would have dropped out previously.
But time will tell - I'll see if the connection degrades over time.