Looks like the Nitecore reincarnated its NU25(2017) headlamp. The old model was popular but was discontinued a few years ago and replaced by newer models ( @LuxWad compared it with three other UL options here) having the same model number but missing features that users liked (e.g. moonlight, high CRI auxiliary, two level red). The ultralight folks were not exactly impressed.
The Classic one seems like genuinely improving on the strengths of the original one. Based on spec sheet it has a little less green main LED (UHE vs. XP-G2), a little tighter main beam, bigger battery, USB-C charging, nicer battery level indicator, a nice (both GITD and reflective) shock cord and all the other features of the original.
Would anyone have sample to say more about it?