With Sony and Fuji continuing to win over photographers with their quickly evolving mirrorless options, many are waiting for Canon and Nikon to respond with truly professional-level mirrorless cameras. Those responses should be coming relatively soon.
Keep in mind that "relatively soon" means likely within the next year or so, but the news is definitely good for those waiting for Canon and Nikon's mirrorless cameras. The Nikkei Asian Review published a small article that summarized the philosophies that have kept Canon and Nikon from aggressively pursuing mirrorless and how their hand has essentially been forced by Sony. Nikkei notes that both companies felt that their DSLRs have "strong brand power" and profitability and did not want to cannibalize those with self-competing mirrorless options, but Sony's progress in the market has made it impossible to continue to ignore professional-level mirrorless options and thus, those are being pursued as we speak. Of course, the critical question of lens mounts remains unanswered, which could very well be the determining factor for a lot of buyers who are wondering if their existing lens libraries will be compatible with the new cameras. Nonetheless, the next year or so for should be an exciting one for the industry, as mirrorless continues to evolve and competition grows.