These events were definitely '3DS-promotion-flavoured', because now we even have the priviledge of a
Grade 2 event being organised, and it is presented by Intergrow, the company behind the Japanese 3DS video game titled "Metal Fight Beyblade 4D X Zero-G Ultimate Tournament" being released on December 19th 2013. The rest of the tournaments I have announced for November, December and January were all Grade 4 events, which are lower shop tournaments.
This Grade 2 tournament will be held on December 21st 2013, and Blader KEN will even be there.
http://beyblade.takaratomy.co.jp/shop/grade2.html
The prizes are gold, silver and bronze Shinobi Saramanda with Beylaunchers of matching colours, as well as a copy of the game for each top three winner.
Also, apparently the 3DS game is still being advertised in this month's CoroCoro, which only makes total sense because it gets released in three days ... It would have been idiotic otherwise.