Hi community!
I’m here to share a good news for you.
We’ve been recently working to upgrade the hardware of TurtleBot3 as a response to countless inquiries from developers all over the world.
The semiconductor shortage in this year dragged us down, but we finally released new product lineups!
TurtleBot3 is now available with three different SBC options!!! 
Now you have a choice to select your Raspberry Pi version and RAM size along with your preferred TurtleBot3 model.
Installing ROS and TurtleBot3 packages on your Raspberry Pi can never be easier.
Simply download the SD card image from ROBOTIS TurtleBot3 eManual and modify a few network configuration.
Oh, and there are more updates to come in the near future so please stay tuned!
Who knows if you will see some other SBC related updates?