WordPress 3.0 bookmarklet changes?

With the WPMU merge into WordPress 3.0, does anyone know if the bookmarklet will be updated to handle multiple blogs? For example: If I have 5 blogs in my WP 3.0 installation at subdomains (1.domain.com, 2.domain, etc.), can I allow a user to post to 3 of them, and can that user add a single bookmarklet for all three sites? This is something I love about Tumblr, and it’d be great to see it arrive in WordPress’ bookmarklet. A dropdown menu appears on the bookmarklet that lets the user pick which blog they want to publish the post to. It’s quite convenient.