For planning and validation purposes, Exchange 2010 SP1 preparation of the forest and domain results in the following:

• rangeUpper property of CN=ms-Exch-Schema-Version-Pt,cn=schema,cn=configuration,<Forest DN> is set to 14726;
• objectVersion property of cn=<ExOrg>,cn=Microsoft Exchange,cn=Services,cn=Configuration,<Forest DN> is set to 13214;
• objectVersion property in the Microsoft Exchange System Objects container of <Domain NC> is set to 13040.

The Exchange Schema Versions page has been updated with this information.

With SP1 RTM the issue with Exchange 2007 SP3 and Exchange 2010 SP1 Beta is a thing of the past, since Exchange 2010 SP1’s version (14726) is greater than Exchange 2007 SP3’s version (14625).