Today, Exchange Team also released new rollup update for Microsoft Exchange 2010 SP3
After installtion of Rollup 5 for Exchange 2010 SP3 your Exchange version number will be raised to 188.8.131.52
Rollup 5 for Exchange 2010 SP3 can be downloaded here:
And description of new rollup you can find here:
As always we recommend to test this rollup in a test environment first.