Full state on uboot for Omnias of all revisions is that we have new uboot running and deployed on CZ11NIC23. Images are not propagated as stable to all Omnias in Turris OS 4.0+ because there are problems we have to iron out. The problem at the moment is that CZ11NIC13 has potentially only two ram chips and that has to be managed in ram training process. It is not rocket science but we are trying to do it in upstreamable way and most importantly our kernel developers are still tied up with Mox issues.
This blocks automatic boot switch between SFP and metalic ethernet WAN and enable of new features in uboot. Neither one is huge problem because automatic switch is not required technically as you can switch to SFP manually (just relink /boot/dtb to appropriate device tree) and new features are not essential. I am not saying that it is ideal state I am just saying that it is not critical such as other issues our kernel developers are tackling at the moment. Please have patient. Those issues are stalling because other issues are being solved.