Originally posted by Snappertim IBIS is the future, if Panasonis are working both systems then I suspect OIS is on the way out, IBIS is better at its basic function and the added bonus' of AA filter, shift lens, High Pixel, and Dust removal are just to good to ignore and as this becomes apparent to Nikon/Canon users the temptation to go IBIS will be irisitable, lets not forget Nikon/Canon started OIS in the film era and setled on OIS because IBIS was out of the question in a film camera, as any flexing of the film would have lead to striations and destruction of the negative surface, Pentax and Olympus and Sony all broke lucky by being late in, and during the digital era, IBIS works on all lens' and if a lens is designed for IBIS the size can be reduced.
Saying "IBIS is the future" is quite a bold statement. Which I don't mind, as long as you have valid arguments. And to be honest, I think you don't entirely succeed there. Dust removal is possible with non-IBIS cameras too. Even with Pentax IBIS, the sensor itself is no longer shaken. That was only the case with older cameras like the K100D Super I had. But since DR II made its appearance, Pentax has moved to ultrasonic vibrations that move a very thin and light filter that sits in front of the imaging sensor (see
https://en.wikipedia.org/wiki/Dust_reduction_system). Look it up; you'll see Canon and Nikon DSLRs also provide dust removal systems. Also, IBIS does not stabilize the image in the viewfinder, or what the AF or metering sensor see, while OIS does.
Also, don't forget Fuji, who started the X-series well into the digital era, and they choose OIS too. Same with Panasonic MFT. So arguing that OIS is a leftover from the analog days, and that everyone would have chosen IBIS if they could reinvent their systems based on that point, is a far stretch. Especially given the fact that OIS does some things IBIS simply can't do.
Btw, about Panasonic MFT apparently moving to IBIS: that actually makes sense if you consider that mirrorless cameras don't have an optical viewfinder or an off-sensor autofocus array or metering sensor. Everything, from metering to focusing to creating the viewfinder image, is done through the image sensor. So there's less of a drawback to choosing IBIS for a mirrorless platform.
I think it's rather two different philosophies. Pick the one you think it's best, but please don't go shouting "this or that is the future" and giving (some) incorrect arguments. Personally, I think IBIS is more versatile, but OIS provides advantages to pure stabilization, at least with traditional DSLRs.