Will Ethereum 2.0 be the same as Ethereum?

As someone who's been keeping a close eye on the cryptocurrency world, I'm intrigued by the upcoming Ethereum 2.0. But I'm left wondering, will it be the same as the original Ethereum we know and use today? Are there any significant differences in terms of its functionality, scalability, and overall approach? Or is this just a simple upgrade with a new name? I'm eager to understand the nuances between the two and how this transition will impact the broader cryptocurrency ecosystem.