Today, after logging in to the Linux Plesk server (CentOS), i found that PLESK 9.5.1 is out, before updating, i noticed that there is a new module, Parallels Premium Antivirus which turned out to be Dr. Web Antivirus.
Anyway, the complete list is as follows
You have an up-to-date version
Apache ASP support Oct 8, 2008
Apache mod_python module Jan 6, 2007
Bandwidth Limiter For Apache support (mod_bw) Nov 7, 2007
Plesk billing June 24, 2009 June 24, 2009
PostgreSQL server support Oct 26, 2009 Oct 26, 2009
SiteBuilder module migration suite Sept 8, 2008 Sept 8, 2008
SiteBuilder publishing support for Plesk May 22, 2007 May 22, 2007
SSHTerm – SSH Terminal java applet Nov 30, 2008 Nov 30, 2008
An update is available
Base packages of Plesk Dec 29, 2009 April 14, 2010
ColdFusion support for Plesk Dec 29, 2009 April 9, 2010
Horde webmail support Dec 29, 2009 April 9, 2010
Kaspersky antivirus module Dec 29, 2009 April 9, 2010
Mailman mailing list manager support Dec 29, 2009 April 9, 2010
MIVA Empresa support Dec 29, 2009 April 9, 2010
Parallels Premium Antivirus Dec 29, 2009 April 9, 2010
Plesk API [former Plesk Agent] Dec 29, 2009 April 9, 2010
Plesk Backup Manager Dec 29, 2009 April 9, 2010
Plesk Firewall module Dec 29, 2009 April 9, 2010
Plesk migration manager Dec 29, 2009 April 9, 2010
Plesk Professional Web Site Editor Dec 29, 2009 April 9, 2010
Plesk Updater Aug 17, 2009 April 7, 2010
Plesk VPN module Dec 29, 2009 April 9, 2010
Ruby on Rails support Dec 29, 2009 April 9, 2010
SpamAssassin support Dec 29, 2009 April 9, 2010
Tomcat Java Servlets support Dec 29, 2009 April 9, 2010
Watchdog (System monitoring module) Dec 29, 2009 April 9, 2010
Not installed
Application vault packages 9.5.1-cos5.build95100410.11 April 9, 2010
AtMail webmail support 1:1.02-cos5.build95100410.11 April 9, 2010
Chinese language pack for China 9.5.1-2010032917 Mar 29, 2010
Chinese language pack for Taiwan 9.5.1-2010032917 Mar 29, 2010
Dutch language pack for Netherlands 9.5.1-2010032917 Mar 29, 2010
French language pack 9.5.1-2010032917 Mar 29, 2010
German language pack 9.5.1-2010032917 Mar 29, 2010
Italian language pack 9.5.1-2010032917 Mar 29, 2010
Japanese language pack 9.5.1-2010032917 Mar 29, 2010
Plesk Battlefield 1942 game server module 1.0.0-cos5.build95100410.11 April 9, 2010
Plesk Battlefield2 game server module 1.0.0-cos5.build95100410.11 April 9, 2010
Plesk Counter-Strike game server module 2.0.0-cos5.build95100410.11 April 9, 2010
Plesk Fileserver module and SMB file server package 0:3.0.33-3.15.el5_4.1 April 9, 2010
Russian language pack 9.5.1-2010032917 Mar 29, 2010
Spanish language pack 9.5.1-2010032917 Mar 29, 2010
Upgrading from 9.3.0 to 9.5.1 went smooth, unlike what you see in the post below on upgrading from 9.2.3 to 9.3.0, in the upgrade below, i had not reinstalled application vault applications because of an MD5 checksum check error in the downloaded package.