Any lens similar to XF 23mm F1.4 ?
The 23 is the most interesting to me too. Sadly it won't be here before the end of the year, maybe not before next year. Meanwhile, I bought a manual Canon FDn 24 mm f2.0 to have F2 at that FOV. Haven't received the adapter yet, though.
SLR Magic is supposed to release a 23 mm f1.7 in February, but I haven't seen any news or reviews yet. That would also be manual and I've heard the price would be around 400 USD.
I agree on it being the most interesting, may force me into an X100, oh the pain......