Not at the moment. Note that Excalidraw+ and the Excalidraw-Obsidian plugin are unrelated. I maintain the Obsidian plugin, and have no inside information or access to Excalidraw+
Sharing is a useful feature, but comes with lots of issues considering the Obsidian setup. In Obsidian images are not embedded but linked. Sharing then becomes an issue of synchronizing a local copies of images with the shared version… Also in Obsidian you will be using Markdown links to local files, there is no way to share that without opening a BIG can of worms.
This is my approach to sharing: https://youtu.be/oGj0aXnbMvk
Not perfect but works when needed. And you don’t even need an Excalidraw+ subscription (though there is an issue with total file size limitation of 1MB, which means you cannot embed too many images in a shared canvas).