The emergence of the F-47 tells us one important thing; it has canards.📜
This means US has decidedly fallen into 2nd tier air power status. Crowning China as the only 1st tier air power.
Why? Because the US can't design and engineer a supersonic tailless 6th gen fighter.
So why is being tailless so important for a 6th gen fighter? Because the vertical tail, the horizontal stabilizers and canards are all small control surfaces that will resonate with low frequency early warning radars. Lighting up for UHF and VHF radars like Christmas decorations.
5th gen fighters like the F-22, F-35, J-35 and J-20, they either have horizontal stabilizers or canards, and all of them have vertical tail. This is fine for 5th gen fighters because they are not designed to evade early warning radars, only high frequency fire-control radars.
6th gen stealth on the other hand requires the aircraft to have broadband (multi-spectral) stealth, that is being stealthy against a much wider range of frequencies, from high frequency fire-control radars to low frequency early warning radars.
Currently the only 6th gen fighters that are flying are the Chinese J-36 and J-50. And now possibly the US F-47. Advanced concept stage is the UK, Italy and Japan GCAP.
Of these 4 designs, only the Chinese J-36 and J-50 are truly tailless designs. F-47 has canards and GCAP has vertical tails. Hence a 3 tiered 6th gen ranking. First tier J-36 and J-50. 2nd tier with compromised stealth; F-47 and the 3rd tier being the simplest GCAP.
I am not exaggerating, the US has never built or flown a tailless supersonic aircraft, that is a fighter with no vertical and horizontal tail or canards, while China has at least 2.