The list including the two unannounced handsets has the purpose of allowing people traveling to New Caledonia to know if their device can use the local 3G network. Of course, the One 2 and One 2 Dual SIM names might be just placeholders that were put there in expectation of the M8. Even so, a new HTC flagship smartphone with dual SIM capabilities certainly makes sense - since the original One also has a dual SIM version.
Just yesterday, we heard that HTC would introduce an M8 mini alongside the regular M8. A One 2 mini? Could be, could be. Let’s hope that HTC will officially announce the new flagship smartphone (with its possible variants) soon to put an end to all these rumors.
source: OPT.nc (translated) via MobileGeeks (translated)