The only major flaw (as a sports/wildlife) of the current 7D is the sensor. I would upgrade to the 7DII if the camera was exactly the same, but had a new sensor with lower noise at higher ISO.
Therefore, introducing other features and leaving the sensor the same is pointless. I would suspect Canon fully knows this.
What I do believe (but hope not), is that the 7DII will be a significant improvement all the way around - but the price will be significantly higher. Therefore, out of reach for many of the current 7D owners, which will be dissapointing.