Unfortunately, we do not have any further information on whether there will still be bundles for this, the stated delivery time is without guarantee, we can therefore not assure it 100%.
I don't use the USB either, so I can't answer that from my own experience.
The HAT has this imprint on the board: Raspberry Pi PoE-HAT (r) Raspberry Pi 2018.
The version described in an article at Heise with the USB problem has a different imprint.
Possibly the UNIPCASE or the Argon POLY+ housing. I have it in an extra case with additional boards and is waterproof, the PoE supplies enough current to power all my weather measuring devices (anemometer, rain amount, wind direction) from SparkFun a Siemens BME680 (temperature, air pressure, humidity and quality) and a Geiger counter.