For an Altcoin Season to occur, Ethereum ($ETH) needs to surpass $5,000 and establish it as support, which is contingent on Bitcoin ($BTC) reaching new all-time highs. This process would likely increase Bitcoin Dominance ($BTC.D) initially, meaning Altcoin Season would only follow a period of Bitcoin strength. Investors should therefore anticipate a rise in Bitcoin Dominance before expecting significant Altcoin outperformance.