This has no official confirmation at this time.
Just in: Reports are being spread that the first wave of gift tins for the 2013 holiday season will have Tidal, Dragon Ruler of Waterfalls and Blaster, Dragon Ruler of Infernos as their mascots. For those who cannot access the leak through the link above, here is a screenshot of the post that possibly started the madness:
So, we can draw a couple of initial conclusions from this story:
1. The four Dragon Rulers (gonna have to get used to that) will almost certainly NOT be Secret Rare in the upcoming Lord of the Tachyon Galaxy set, as they will almost certainly be printed as Secret Rares in the tins.
2. After the release of the tins, Dragon Rulers will be played much more than previously expected, as the price of the deck will be much lower than before. However, it will still be an obstacle to collect multiple copies of Gold Sarcophagus, Seven Star Sword, Number 11: Big Eye and Mecha Phantom Beast Dracossack.
Update #1 (6:57pm EST): I've found a second image showing the tins: https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-snc6/249003_10201166889272263_152969320_n.jpg
I will continue to update this post or create new ones if or when new details are unveiled. Thanks for reading!