uh, no. not on mine...
where are you seeing these specs?
there is a floyd version and a non-floyd version of that guitar
I don't know very much about Horizons, but enough to solve your question.
From the current US catalogue, you can find two main types of Standard Series Horizon guitars:
a) NT (which stands for Non-Tremolo)
b) FR (Floyd Rose)
AFAIK, the "ESP Horizon" NT and FR don't have a maple top, while the FR-II and NT-II do. The first ones can have alder or ash bodies, while the last ones can have alder or mahogany bodies (depending on a combination of factors such as type of bridge and pickups).
Finally, there is no need for locking tuners when you have a locking nut. And the locking tuners in the NT models aren't designed like Sperzels because they work differently.
That's all I can say (hoping that's true for the present Horizons).
Enough said, go and buy one. They're amazing guitars.
Just received my new Horizon NT-II recently, and it has locking tuners. (Absolutely love this guitar, by the way.)