Nope. They never state the existence of two boxes or two sets of promos. But now I'm interested! Or at least curious. I was expecting that we'd get the Origin Form Sinnoh box legend V full arts in this year's Ultra Premium Collection, but now I suppose they'll be shoved either into some other box, or into our November set (which will probably resemble Fusion Strike in terms of having oodles of miscellaneous cards shoved in it), OR into a hitherto unannounced holiday set. I'm not sure on what dates each of the original holiday sets were previously leaked, but since we don't get the trademarks for English set names dropped six or more months in advance the way we do for Japanese set names, there's a chance that we could still get one out of the blue.
The question is... what would The Pokemon Company International put in such a set? Special cards from VSTAR Universe? Maybe, but then would we see them all in the United States before Japan, like with shiny Charizard V? Or would the set release in December alongside the Japanese equivalent? Or, more unlikely still, would the holiday set release in January (or perhaps February) of the following year? The fact is, we don't know what sorts of cards Pokemon might choose to put in VSTAR Universe of even if there will be a comparable subset to Shiny Star V or VMAX Climax. (P.S. Climax does not mean "the end of", but rather "the height of" or "the peak of", so getting a slow trickle of VMAXs after VMAX Climax should have been expected. They certainly didn't call it VMAX Resolution!) GX Ultra Shiny was sandwiched between two Holiday sets with fairly small subsets/chase card archetypes. Which doesn't really say anything one way or the other, since on the one hand, Tag All Stars only had a few Full Arts, Alternate Arts, and Hyper Rares, plus a dozen or two Full Art Supporters (all of these being your Secret Rare or two for the box) and a guaranteed textures foil energy, but, on the other hand, GX Ultra Shiny wasn't the second set in a row to have a large subset. (Fun fact: GX Ultra Shiny had only two baby shinys per box. Shiny Star V had three.)