HTML5 does not mandate an external JavaScript engine. You can run JavaScript in a standalone language runtime in HTML4 also.
If firmware 3.5 provides a standalone JavaScript run-time for other apps to use, it'd be good news. May be PS Home can use it too since they tried to use Java in a never released version.
EDIT: The HTML5 JavaScript API is more advanced (e.g., supports drag and drop, local cache, 2D graphics, ability to play audio and video, cross document messaging, etc.) but in HTML4, you can call plugin APIs to perform specific functions, like play/pause video, and manipulate HTML elements too.
We know at this point that some video providers like NetFlix support multiple devices and clients. We can't say if they want existing clients to switch. The Blu-ray players use Java to render 2D graphics, basic HTML to layout the UI, and H.264 to stream the videos. AppleTV uses native code. I have no idea what PS3 uses but it's difficult to conclude that HTML5 is the only approach at this point. It could be, but we need more evidence (or someone should leak 3.50 SDK )
If firmware 3.5 provides a standalone JavaScript run-time for other apps to use, it'd be good news. May be PS Home can use it too since they tried to use Java in a never released version.
EDIT: The HTML5 JavaScript API is more advanced (e.g., supports drag and drop, local cache, 2D graphics, ability to play audio and video, cross document messaging, etc.) but in HTML4, you can call plugin APIs to perform specific functions, like play/pause video, and manipulate HTML elements too.
We know at this point that some video providers like NetFlix support multiple devices and clients. We can't say if they want existing clients to switch. The Blu-ray players use Java to render 2D graphics, basic HTML to layout the UI, and H.264 to stream the videos. AppleTV uses native code. I have no idea what PS3 uses but it's difficult to conclude that HTML5 is the only approach at this point. It could be, but we need more evidence (or someone should leak 3.50 SDK )