TBH I’d hang on and see if you can, personally I’m inclined to wait for a HT frame that ticks all the boxes I’m likely to need, wheel size is only part of the mix and a few other things need to shake out before I replace my HT, three competing wheel sizes and various other changing “standards” only serve to sub-divide the market and probably knackers VFM generally at this point IMO…
Once all the wheel sizing nonsense has been settled (by the market I assume) I kind of want the following in my next HT, probably.
Steel, possibly Carbon, who knows, sensible weight and robust at a reasonable price will do me.
44mm headtube
30.9+ Seat tube (wider dropper compatibility options)
Slackish Head angle
sensible length front end and standover height
135/QR Dropouts (I’d consider 142×12 but has it been (and will it be) adopted all that widely on HTs?
Euro BB
~2.3″(+) tyre clearance whatever the wheel size
All of which sounds very 45650b-ish, but I’m still going to wait and eek another couple of years out of my “Old” but perfectly functional 26″ wheeled HT, I don’t think it’ll be too hard to keep it going that bit longer…
I’m not too bothered about keeping up with the new shiney Standards, I’m a serial used parts buyer. But in 5-10 years time I can see me having some issues if I’m trying to keep a 26″ wheeled, EC34 head-tubed, 27.2mm seat-tubed frame going, when the used examples of compatible parts are drying up, and newer versions have ceased to be made.
There’s no great pressure to change frames… Just yet, but there will be longer term, not an issue if yo change bikes every other year but if you tend to wring a decade out of a bike, or buy used kit there will be a tipping point IMO.