Really good article in MSDN Magazine this month by Andrey Markeev. Check it out:
Microsoft SharePoint is an enterprise platform with a long history and vast variety of features, which is why it can’t always react quickly enough to follow emerging Web technology trends. Despite a wide enterprise adoption of SharePoint and a huge effort to provide a broad number of features, SharePoint still lags behind modern CMS products in terms of immersive UIs, such as HTML5 and CSS3.
Found this via MSDN Flash.