Rivian (NASDAQ:RIVN) stock is just slightly in the red today after an announcement that some fans are likely unhappy with.The electric truck maker has enjoyed an excellent month as share prices have more than doubled, following multiple positive catalysts. Today brought some news that will probably disappoint some prospective buyers and electric vehicle (EV) enthusiasts. According to Electrek, Rivian will not be integrating Apple CarPlay into its vehicles, at least not in the near future.What does this mean ...