Still no upgrade to 22H2 offered. The solution is to create a backup of the XPS using Macrium Relfect. Take that backup to another computer running Hyper-v and using Macrium ViBoot create a Virtual machine from the XPS backup. Download and install the 22H2 ISO from Microsoft. onto the Virtual machine. You will be offered the ability now to "Keep personal files and applications". Backup the Virtual machine with ViBoot. Copy the backup to the XPS machine (to non-OS disk) Run Macrium relfect to restore the OS drive from the ViBoot copy.  the XPS will boot into the new OS (22H2) with files and applications preserved. Doubt the problems were related to software. Suspect there is some block from hardwared devices or the bios restricting the direct upgrade. Nevertheless, all is working fine here. Wish Dell could explain this!  
I have 2 computers that were upgraded to Windows 11 22H2 with no difficulty (Including a Dell Inspiron 13 7373). The less than 1 year old XPS 9305 has not been offered the Windows 11 update to 22H2 in "Windows Update'.  In addition, if I attempt to install 22H2 using the iso from Windows Update Assistant I am only offered a clean install as the "Save files and applications" is grayed out. I do not want to do a clean install on my laptop. 2 Questions! Are there known issues with 22H2 and XPS 13 9305? Why am I only offered clean install on the Update Assistant created iso? Thanks  
Windows 11 22H2 and XPS 13 9305