The statement is definitively confirmed by multiple primary and secondary sources. A post from Upbit's official X account (Source 10) explicitly states that Plasma (XPL) will be supported on the KRW, BTC, and USDT markets. This is directly corroborated by a notice on Upbit's official website (Source 7), multiple news aggregators (Sources 6, 8, 11), and live trading data from aggregators like CoinGecko and Coinranking (Sources 2, 9, 12) which show XPL trading on the KRW market.