Taylor Customer Service told me yesterday that only the slot heads are available.
I just got off the phone with Jim Tordoff and worked up an order on the guitar. He is sending me the build sheet in a minute so we will know for sure.
As a practical matter, I will not order a standard peghead without Gotoh 510s so ordering it with the standard slot head is a big money saver. Overall I am fine with the slot heads and with the money that I have saved on Gotohs and Addi CV bracing (also not available as a 12 fret option), I have done some nice things on the guitar such as ordering it with a bone saddle and nut and upgrading from black plastic binding to ebony.
The guitar will be an all mahogany 12 fret GC non cutaway. Edgeburst finish all over. Ebony binding, three piece back with ebony mini wedge. Ebony rosette with bound sound hole. Cream and white purfling. No fretboard markers. Gloss back, sides and top; satin neck. No electronics. Bone nut and saddle.
I solved the ivory tuner button problem by ordering the guitar with no end or strap pins. This will enable me to add ivory pins and to use straps with ordinary sized strap holes. The ivory end pin, cream purfling and ivory tuners will be nice accents to the overall dark color of the guitar.