Yeah, I heard about the GH5s the day after I placed my order for the GH5 :) I'm not going to complain though because I got it for $1500.
I haven't heard of any further firmware updates for GH5 and then the news of the GH5s made me think the big updates for GH5 were prolly over now with the emphasis on the new GH5s.
GH5 for now and then a year from now when the a7S III comes out sell the GH5 and get the a7s III.
I had the same dilemma but ultimately the GH5 has more of what I want now but the good thing is the a7S III will have the best of both the GH5 and a7S II plus more.
(accidental double post)