Microsoft has released a new version of MSXML for public review. It's the first version to support the XSLT recommendation. The change documentation lists the XSL features not supported in this new release: xsl:transform

• xsl:import
• default-space, xsl:strip-space, xsl:preserve-space
• xsl:apply-imports
• named templates, xsl:call-template
• xsl:namespace-alias
• named attribute sets
• xsl:number
• case-order attribute
• lang attribute

• following-sibling
• preceding
• preceding-sibling
• namespace
• lang
• sum
• floor
• ceiling
• round