[lxml] XRD validation

Hi, I'm using lxml to verify an XML against an XRD schema, but I'm using some of the features of v1.1 which gave me an error during validation with lxml: xrd snipped: error generated by lxml: xmlschema = etree.XMLSchema(xmlschema_doc) File "src\lxml\xmlschema.pxi", line 88, in lxml.etree.XMLSchema.__init__ lxml.etree.XMLSchemaParseError: Element '{http://www.w3.org/2001/XMLSchema}element': The content is not valid. Expected is (annotation?, ((simpleType | complexType)?, (unique | key | keyref)*))., line 107 Line 107 is the part where a new feature is being used (test="...") Is this a normal behavior of lxml? Are there plans to support v1.1 [ https://www.w3.org/TR/xmlschema11-1/#intro1.1 | https://www.w3.org/TR/xmlschema11-1/#intro1.1 ] BR, Jeroen