Hi there,
SO , A couple things. 1. Seed can’t possibly know exactly when the newest Jetpacks will be released outside of what are the official release dates, then some testing needs to be performed and updates to the seeed specific differences in the reference designs and the REAL, new and different chips and some drivers as well , case in point would be the HDMI, from packs ago.
They have explained it on here, how the process works.
Nvidia has more of a “road-map” more so, than a release schedule if you are familiar with the cycles. I’m confident Seeed will get there, but So many AI , related products recently that require greater explanation than selling “grove Sensors” 
,The ROBOTICS alone would keep a small team busy for hours.
they are adding more AI personnel too, so be patient and stay tuned.
AFAIK, the existing JP,2.2.2 update is working well? there is NOT an official JP6.2.2 it was always a APT -update.. Ymmv? 
I.e.
Seeed Studio does not offer a direct, standalone system image specifically for JetPack 6.2.2. Instead, for Jetson devices like the reComputer J401, J501, and Orin Nano/NX, you should use the official JetPack 6.2 / 6.2.1 image and perform an APT upgrade directly on the device. [1, 2, 3, 4, 5, 6, 7]
How to Get Your System Running on JetPack 6.2.2
1. Flash the Base Image
- Download the base SD Card or BSP image from the official [image]JetPack SDK page.
- Use Balena Etcher to flash the image onto your SD card or NVMe SSD.
- Boot your device and complete the initial Ubuntu setup. [1, 2, 3]
2. Perform the APT Upgrade to 6.2.2
Once your device is running and connected to the internet, open the terminal and run the following commands: [1]
sudo apt update
sudo apt upgrade
sudo apt install nvidia-jetpack [1]
3. Verify Your System
After the update is complete, reboot your device. You can verify your installation and core firmware versions using the command:
cat /etc/nv_tegra_release
HTH
GL 
PJ 