Or, if you're video-centered, it may be wise to see what the new L-mount Panasonics offer... I've written that I can't see where they fit in the picture for stills (much bigger than a Z or a Sony with a sensor that is (at best) as good, probably slower AF (CDAF only), and a brand-new lens line with no obvious adaptability).
On the other hand, I CAN see how they fit for video, and it's potentially really exciting. Panasonic has historically had the best video capability of any make, and they could really leverage that here. The S1r sensor should have enough resolution for 8K, although that would be very hard to record or display, so I suspect it'll be used for oversampled 4K instead. The XQD card has enough bandwidth to record 4K raw, and that seems likely, as well as some very good compression ratios. 4K slo-mo with a lot of options seems likely as well.