I've seen the 5 inch Strange – someone I know was riding it the other week and it was in the Orange van at Dalby on Sunday too. Personally I'm unconvinced but then I haven't ridden it.
The other (more interesting to me) thing they had at Dalby was a Strange that looked like it was a Five with a larger diameter seat tube, massive flared head tube, possibly slightly more svelte swing arm and swappable dropouts (maxle, QR and straight bolt through to be available apparently). It looked like a good old fashioned Five but with some of the niggles addressed.
They also said that larger diameter seat tubes will be filtering through the range to become standard – but not when.
Hope that helps / feeds the rumour mill.
And Orange if you're out there – I was the one towing my son's bike.