I am not sure what this all means but I took a quick look in the archives for sold Vixen mounts and found a SXW sold by Wavytone - but it wasn't sold in 2011 but 2 years earlier in 2009. Which means that particular mount sold by Wavytone in 2009 couldn't possibly have featured version 2.3 of the original starbook.
I suppose since 2009 Wavytone must have purchased another second Vixen Sphinx mount - presumably a SXD this time (not SXW) - and thereafter sold it in late 2011 as it was yet again considered unsatisfactory.
Personally, I can't fathom how Vixen stays in business or persist with these mounts if they are so incredibly bad. Indeed, they are so bad that some people buy two of them within roughly two years.
Its not like the astronomy community isn't filled with discerning consumers and competitive manufacturers.