If one is sitting down with others and drinking wine, and they made Borei Pri HaGefen (Who creates the fruit of the vine), then they don’t make a Borei Pri HaGefen again when they bring other wine to the table, because they already made it on the first wine. But there is a separate Beracha (blessing) that the rabbis established, called HaTov VehaMetiv (The Good and the Bestower of Good), thanking Hashem for the tov, the good that they had, and the metiv, and the additional tov that they’re going to have.
When we say other wine, it means that it has to be different wine: different in taste, different in flavor. It could be a different type; it could even be the same type, but from a different year in which it was produced, which will produce a slightly different flavor. It doesn’t necessarily have to be an upgrade. As long as the wine is still considered a good wine, it’s considered tov, so then it’s acceptable for the person to make HaTov VehaMetiv, as long as it’s not what the rabbis call yayin garua. It’s not like—no disrespect to Manischewitz or something else that is not considered a top-notch, decent wine—so otherwise, you can make HaTov VehaMetiv. But if it’s yayin garua, certainly if it was grape juice or something, the person would not make the Beracha of HaTov VehaMetiv.