The Altcoin Season Index, currently at 30, suggests early signs of a potential altcoin rally in 2025 as Bitcoin's market dominance shows signs of weakening. Analysts from CryptoElites and Michael van de Poppe highlight that Bitcoin's dominance near 65% and a possible breakdown from a multi-year triangle pattern could lead to a significant capital shift into altcoins. Historical trends indicate that similar conditions preceded the 2021 altcoin surge. The market capitalization for altcoins remains robust, with key support levels between $780 billion and $930 billion. The next major resistance is anticipated around $1.25 trillion, aligning with previous cycle highs, potentially setting the stage for a substantial altcoin expansion.