Nintendo Co. revised its full-year forecast down after profit and revenue plummeted over the holiday period, with gamers increasingly looking forward to the release of its next-generation console.The Kyoto-based company now expects ¥280 billion ($1.8 billion) in operating income in the fiscal year to March, slashing more than a fifth from its prior forecast. It also expects to sell 11 million units of the original Switch console, down from the 12.5 million previously....