The Exchange team is announcing today the availability of Update Rollup 9 for Exchange Server 2010 Service Pack 3. Update Rollup 9 is the latest rollup of customer fixes available for Exchange Server 2010 Service Pack 3. The release contains fixes for customer reported issues and previously released security bulletins. Update Rollup 9 is not considered a security release as it contains no new previously unreleased security bulletins. A complete list of issues resolved in Exchange Server 2010 Service Pack 3 Update Rollup 9 may be found in KB3030085. Customers running any Service Pack 3 Update Rollup for Exchange Server 2010 can move to Update Rollup 9 directly.
Update Rollup 9 is available now on the Microsoft Download Center and will be distributed via Microsoft Update in April.
Read more at source: http://blogs.technet.com/b/exchange/archive/2015/03/17/announcing-update-rollup-9-for-exchange-server-2010-service-pack-3.aspx