Yes recently and they look just like a HK500 to me equipped with HK electronics.
If you are looking at a 500 of good quality that doesn't cost the earth, look at the Tarot 500 ESP (see the miles long Tarot 500 thread
CloggieCopterâ„¢ (Tarot) 450 Pro, Align 450M, HW Platinum Pro 40A, D12-MG, Assan GA-250 + HSG-5084MG
CloggieCopterâ„¢ (Tarot) 500 ESP, AX Typhoon 500H, HW Platinum Pro 80A, MG930, Quark + DS520
Futaba T7CH, R617FS and FrSky TFR8-S