An upgrade in Ethereum might have a positive impact on the cryptocurrency, which in turn might bring about an increase in price. As to what ETH price would be at the end of 2020, cannot be said, but there would be hope for the altcoin to attain a 2k range, if only it can reach its previous peak it attained in 2017.
When the Istanbul was the new ETH update, the market seemed to revive a bit while engulfed in the bear market. Perhaps this is the coin I trust the most in the market, it has a huge impact. I am sure in the near future it will return to the market.