In general agreement with one caveat; Svelte is hardly new. Rich Harris was using it at NYT 4 years (at least) ago, and it's been open source since. It's caught on because of; a pushback against React, the surging popularity of Vue, the sudden popularity of Rollup (which has been around just as long, but adoption in Snowpack/Astro and Vite was a game changer), Rich being hired by Vercel and more weight behind Svelte. All of those things have gelled to create a popularity surge in the framework. I'd shy away from calling it the "new hotness," and simply bear in mind that it's just trending lately.