the GO has the same bracing pattern regardless of series, unlike the 300-700 GA, 800s, 900, koa & PS -
the 12 string GS bracing pattern seems to have undergone some changes,
as there have been some non-standard models offered with CV bracing
since there are dealers receiving standard 300 series models with ES2 & there have been "prototypes" of
X18ce models with that designation (rather than Cust GO) on the soundhole label before the GO FE models
were rolled out, i would be very surprised if there weren't as least some prototype GO/X58 models around -
when they are released & i have a very hard time believing that there will not be a 12 string GO model,
it may just "pop up" unannounced & just seem to magically appear on their site, as the 150e did initially
i think 318, 328 & 418 models would be pretty cool additions, as well as a 326 -
we're barely into the second quarter of 2014 & i'll bet when there are changes, they will happen quickly