What changes should be expected with everything pertaining to bitcoin and altcoins with the implementation of segwit2x?
Since no one has answered this yet, I guess I will.
First off, we may very well see some major fluctuations in price. Either up or down, expect there to be significant change as we just saw with the implementation of BIP91. In the past 24 hours, Bitcoin went from $2,000 up to almost $3,000. IN 24 HOURS!
While I am not an expert in the underlying technology of the blockchain, I can tell you as a day trader that this FUD is not good for Bitcoin overall. Only when it is finally done with can we continue growing towards $10,000 and beyond. Hope this answers your question, or at least in part.