In a departure from the norm it's 'gasp' aluminum.
This is a first attempt at an alu road frame for me, working with a manufacturer in the Czech Republic - same folks who built the recent track frames. Much the same as for those, I'm looking to introduce these as a full custom option in the range.
This particular frame is for me to use as a faster winter training bike, and the odd summer crit/road race. However anything from rack mounted commuter to full on race bike would be possible, as will choice of angles (this one is 73/73), tube profiles, geometry, etc etc. Pricing from around £800 frame and fork, colour of your choice - would people go for that?
Unlikely I'll do a production alu road frame, that is more likely to be thin, OS steel - maybe stainless...