The altcoin market is experiencing a notable upswing, with the Altcoin Season Index reaching 59, marking its highest level since January 2025. This development indicates the onset of what many market observers are calling 'altseason.' Key technical indicators support this trend, including the breaking of a 1,000-day downtrend in Bitcoin dominance ($BTC.D), a death cross on the daily chart, and the daily 50 moving average being breached. Additionally, Bitcoin dominance has declined from approximately 67% to 58.3%, and attempts to retest previous levels have failed. While some participants emphasize that this period is specifically favorable for Ethereum (ETH), others caution that a true altseason might require more substantial gains, such as a 100x increase in altcoin values. Overall, the current market signals suggest a shift in momentum favoring altcoins after a prolonged period dominated by Bitcoin.