Who is Solana new competitor?

Who exactly is Solana's new competitor? I've heard rumors of a rising star in the cryptocurrency space that's making waves, but I'm not entirely sure who it is. Could you please elaborate on this newcomer? What makes them so unique and challenging for Solana? Are they focusing on similar technologies or do they offer something entirely new? How do they plan to capture a share of the market? And finally, how do experts and investors view this new entrant in the crypto world?