According to Crypto Rover, major altcoins are showing signs of preparing for a new upward phase, as highlighted in his May 12, 2025, analysis (source: @rovercrc on Twitter). Trading volumes for several leading altcoins have spiked, and technical indicators like RSI and MACD suggest growing bullish momentum. Traders are watching for potential breakouts in assets such as Ethereum, Solana, and Avalanche, signaling a possible altcoin season. This renewed interest could increase volatility and present high-reward trading opportunities, making it vital for crypto market participants to monitor momentum shifts and set stop-loss levels accordingly (source: @rovercrc on Twitter).