The Chromecast line has been around for years, so other services besides Hulu will have certainly integrated Casting into their apps. The Chromecast Ultra was released in 2016, and there's no reason to believe a new version is on its way.
How to Connect to Chromecast? - Microsoft Community Mar 14, 2018 Best Chromecast For Streaming Hulu | CordCutters Sep 06, 2018 Hulu + Live TV on VIZIO SmartCast™ Upgrade to Hulu + Live TV. Now on VIZIO SmartCast™. Watch live sports, news, and events on 60+ top channels. Plus, you can keep enjoying the entire Hulu streaming library.
[Chromecast] How does Hulu work? – Hulu Help Center
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Google Chrome Blog: Hulu Plus now works with Chromecast Oct 02, 2013