JAXP history (updated)

Java SE	JAXP	What’s new
		DOM level 0: javascript in NS/IE v3
	1.0	DOM level 1 (tree), SAX 1.0 (push) org.xml.sax.Parser
1.4	1.1	DOM Level 2, SAX 2.0 (+validation), TrAX (XSLT) Apache Crimson XMLReader
	1.2	XML Schema Apache Xerces2 XMLReader
5	1.3	DOM level 3, XML 1.1, XInclude 1.0, Xpath 1, Validator API
6	1.4	StAX (pull) SE also bundles JAXB
7u40	1.5
8	1.6
9	-	no separate JAXP anymore, moved into Java SE

More details on DOM levels.