Pokemon Special doesn't exist as afar as the official Japanese site of Pokemon. For the japanesee site, they talk about all things of the franchise (GF games, side games, main anime/movie, side-program of Pokemon, pokemon cards, merchandising, all type of events related to Pokemon. Except he Pokemon managa. And even in the manga, thge "pokemon manga" has popularity on Japan given it's published by the main CoroCoro as opposed to CoroCoro Ichiban (who has a LOT less popularity) and Pokemon Fan (which is a magazine for heavy Pokemon fans). I think that more people in Japan have seen this:
http://d3j5vwomefv46c.cloudfront.net/photos/thumb/590368377.jpg?1338522865
http://d3j5vwomefv46c.cloudfront.net/photos/thumb/606318415.jpg?1340773915
than Pokemon Special.
And I think that in 2011 Pokemon Reburst (target audience NOT being children) was more popualr than Special.
And for the magazine, I think that 80% of Pokemon audience in CoroCoro Ichiban read Special. In pooikemon Fan I give it a 30% ofr lectors that view the magazine. But in Pokemon Ichiban Pokemon is one of the franchises (in Pokemon Fan Pokemon is in technically 100% of viewers.
However, I think that we are going to get something related to