Joffa, your player will most likely come with the latest firmware which is the 9.0.XX series. At the moment the tools for extracting and modding firmware will not work on any firmware above 9.0.43 so if your player is running 9.0.48 or 9.0.50 etc modding is not an option at the moment. Also a word of warning do not try to load any other firmware to your player it will almost certainly brick it and there is very little chance of recovering it at the moment.
The theme is a bit dated now, firmware for these players differ so much now it would be unlikely that the theme would suit newer players but I still have it running on my trusty old Nano Clone
Have a Great Christmas and let us know whenyour player arrives.