The DC Bonus Sale is over but the Upgrade Shop has a new offer for the month of September. The Upgrade Shop is being visited by Blimey the Pirate Dragon. He's sticking around for the month of September and will fly into your Pet inventory the first time you buy any upgrade package (DragonCrystals or Guardian). If you already bought an upgrade package this month, Blimey will climb into your Pet inventory all by himself.
Also... if you like really like this idea, let Artix know on Twitter and we may do a similar promotion next month!