西门子快要出step7 v5.3版本软件了。消息可靠。订货号：6ES7810-4CC07-0YA5
STEP 7 V5.3 is herewith released for ordering. Start of delivery is planned for February 2004. An upgrade will be available at a charge. Clients with a valid Software Update Service agreement for STEP 7 will receive the upgrade for STEP 7 V5.3 automatically.Important: STEP 7 V5.3 will only be released for MS Windows 2000 Professional and MS Windows XP Professional operating systems. STEP 7 V5.3 will also be included in the new STEP 7 Professional Edition 2004, with start of delivery in March 2004 and a separate Sales Release.