Hi Adam,
no, to upload the ID-File and the support from encrypted Mails is not available in R6.02. If you mean with the special logout feature the Active X Control which clears all history from the current session and closes the browser this also available in R6.02. Maybe you think about an incremental update to R6.03 which supports the Mail encryption. See the differences here ->
http://www-1.ibm.com/support/docview.wss?rs=463&context=SSKTMJ&q1=domino+web+access&uid=swg21140881&loc=en_US&cs=utf-8&lang=en
Best regards
Chris