Originally Posted by
DMC707
26" wheels are going to be supported for a long time - One thing that is not supported though are 1" head tubes, so make sure you dont go too far back in years
Wheel will be, as that's really the only difference between a 26" and 27.5 bike, for steerers, 1" was never really supported in the first place, as it went with in a few years of suspension becoming common, and had gone by the time it was standard (last seen in production around 1996), getting a 1 1/8th" for new now is harder, as most are tapered, although if your frame has a ZX heasdset, this isn't an issue.
If looking for a new bike for the 2016 season, would be looking at 27.5+, forget 26" as it's dead when it comes to new bikes, and would be cautious with 27.5 bikes as the + standard (with boost hubs & big tires) may will take over from the 27.5 that came about a few years back (nothing stays as a standard for more than a season or so today)