Vega Protocol plans to shut down its alpha mainnet chain within three months and discontinue support for its VEGA token, as outlined in an August 30 proposal. The focus will shift to developing and promoting a new project, "Nebula," a decentralized exchange with its own NEB token. VEGA holders can swap their tokens for NEB. The proposal, supported by 1.7 million tokens, has caused VEGA’s price to drop sharply.