The question is legitimate. Firmware .0510 has been in existence since autumn 2019. Whoever has it on their copter is currently stuck. Earlier this year, the NLD team said "We hope to have a release fresh out of the oven by the end of January." It's June now. There should be a solution soon. How will it be defined soon? It seems that their own desires and ideas miss reality here. Good luck to the team.
Yes, it is legitimate. I would rather they release a good stable version than a rushed one wouldn't you? FW510 is clearly more difficult than others have been and as such takes time to test all eventualities and scenarios. I am anxious for it too, as i am on it. It will be released when ready and the team are 100% confident in it. Anything else and can you imagine the uproar??
I am excited for its release as are many, along with other drones too, apparently inbound this week...