Amazon (AMZN) is planning to give its Alexa voice assistant a generative AI-powered upgrade that could require a new subscription fee, CNBC reported Wednesday. Amazon stock was slightly higher in early trading.X The Seattle-based tech behemoth plans to launch the upgraded Alexa later this year, according to CNBC's report. Amazon has not yet decided on a price for the subscription. But it would be charged separately from its $14.99-per-month Prime subscription, the report said, citing unnamed sources.The tec ...