I will completely disagree with you regarding focus tracking on the A6000. I found it terrible. My E-M1 is better, but in comparison to traditional DLSR they are all lacking. The 24mp doesn't concern me much. In my use case, I can put ANY lens the body and have very good stabilization. I'm hand holding stuff I never thought possible with this system.
Well, I am fairly new to the Olympus system, so I will say I was not even aware you had to turn off IBIS for the fastest frame rate. I honestly didn't buy it for frame rate and only ever used the high frame rate to see it work. For me, this is not a big deal.
But lets put this into perspective; you are now so far into Apples/Oranges (or whatever over-used phrase you want to use here) that it's really silly to even continue this thought. Lets see. You implied above that a feature packed body costing ~$1k is too much, but yet you want the performance of a $15k+ system. The D4S is what, 7,000? The 1DX about the same. The Nikon 400/2.8 is $9000, the Canon 400 is over $10k. Um yeah I'd love to see equivalent features in a system costing a fraction of the price too but the realist in me says it will never happen. Well, never say never I suppose.
There is a reason people like me keep the professional Canon/Nikon systems. They are better at certain tasks and very likely will be for a long time.
Sorry to divert the OP's question here. I still think you should not wait for futures. Life is too short. There will always be "better" around the corner.
-mike
If you slap a Nikkor 18-55 VR DX lens onto a Nikon D4s and you compare that even to my E-P5 as I own both with say a Olympus 12-40, my E-P5 wins and I can do it every time. Why a $7000 camera perform less than a $800 camera ?!? Because the Olympus 12-40 has a better performing autofocus motor. The slow 18-55 VR DX kit lens takes about 1 or sometimes 2 seconds to start moving the lens in and out. I always tell my clients to upgrade their lens first, NOT their bodies, to improve AF performance plus among other things because a better, bigger and faster motor on the lens is going to outperform the slower smaller motor. But this is an Apples and Oranges comparison and you're making that comparison against the Sony vs E-M1. Unfortunately, what you're comparing is with the limited lens line up that Sony offers compared to the vast array of good quality lenses Olympus has. Which is the reason why the new Olympus 40-150 f/2.8 has twin focus motors -- to improve the speed of driving the lens elements to focus on subjects either continuously or statically. But this deployment of motor performance driving selective glass elements is quite commonly seen in the Canon and Nikon camps especially with their larger and more expensive lenses like the 200-400, 300, 400 and 500 lenses. Again, it's simply technology trickling down from the elite to the masses.
But coming back to the OP's question here is that, we are talking merely a few months here. It's now very close to November, then December and voila we enter 2015 in January where a possible announcement looms. We are talking about a mere 3 to 4 months wait. Yes, if the OP needs better C-AF performance and 4/3 lens support, waiting makes no sense at all and the ergonomics of the new E-M5 may not be as good as the E-M1. And the OP thinks the good deals might disappear.
The reason the deals are here and always here because sales are slow for everybody.
The last bastion of DSLR high AF performance will eventually be met by mirrorless cameras and I suspect that 2015 or 2016 will be those years, which is the reasons why Canon and Nikon are nervous. Their bread and butter machines; the Rebel and the D3xxx and D5xxx or D7xxx will finally be threatened by competing newer generation mirrorless. This is again inevitable because mirrorless is getting that good. Just 1 more generation and we are there and then, the DSLR bodies will always be for professionals who always need the fastest and the best while most of us just need a camera that can match and beat their older DSLR bodies.
Cheers...
