Depends on you. If you are into longer terms then you better keep your eth because I think it's expected to grow more in the future now that it's on its new version but if you are in for shorter terms only then you better sold your eth now if you bought lower because I think eth is already rising.

I agree on those rumors that eth will dump right after the merge because many people are also going to sell for profits but that dip won't last long because there will always be buyers right after it. For me I think I won't sell till the merge and forking is done so that I can get some free fork coins which I can sell together with my eth for a better profit.