They've stated something to the effect of that when the beta rules come out, they'd like to begin working on it.
No.
Speaking for myself here: it would be kind of foolish to invest much development time in a product that is in extreme flux right now. Besides, they still haven't finished the first two products they started.
Update: the RPGX devs recently posted an update indicating they've made huge strides in the area of companions. I believe they posted an example of a familiar.
While we can't expect anything for Pathfinder RPG until that system has gained a lot more stability, the RPGX crew are releasing Pathfinder datasets for the current tool as the products are released: they just posted a combined release for the first Pathfinder series as well.