- XHTML Compliant - Renders in XHTML compliant mark-up out of the box
Not sure. You'll want to download the Developer starter site to check the control you are interested in. If you're concerned about accessibilty, I several controls have a 508 Compliance switch.
- Canonical URLs - Able to specific a canonical URL for a single page SEO
In theory yes, in practise no.
- Friendly URLs - Able to create and configure SEO friendly URLs and
formats
Yes. Option for manual, regex and automatic aliasing.
- XML Site Map - Able to dynamically and automatically generate an XML Site
Map Granular
- Site Map Priorities - Able to set XML sitemap priorities in the page
admin
Don't think this is out of the box. You would need to look at a custom solution.
- Semantic Menu - A menu system that uses semantic mark-up
Not out of the box. You would need to customise the mark-up via XSLT.
- Google Analytics Integration - Full integration of the Google Analytics
script
Yes, out of the box. See here for some help implimenting this.
- Search Engine Submission - Allows you to submit the website to a variety
of search engines from an admin
interface
Not that I am aware of.
- XHTML Compatible Controls - All controls used (menus, grids, etc.)
render XHTML compliant mark-up
See my answer to question 1. Out of the box - no, but depends on which controls you are using.
As Justin Niessner mentions, there is the option to overcome any of this via custom work. To help with your evaluatation, I recommend downloading the Developer starter site and having a look at the default markup of the control.
Also, there is an Ektron forum which is quite vibrant.
Edit - To clarify, I am not employed nor speak for Ektron. Just a developer who is working on the platform.