On Thursday, Apple posted updates to all the software in the iWork i08 Suite, Pages, Numbers, and Keynote.
The descriptions in the System Preferences -> Software Update were terse.
Keynote 4.0.1 - This update primarily addresses issues with builds and performance. 32.4 MB.
Pages 3.0.1 - This update primarily addresses issues with change tracking and performance. 29.1 MB.
Numbers 1.0.1 - This update primarily addresses issues with tables and performance. 27.3 MB.