We will jump 3.5 and target next release to 4.0. All 3.5 development work will be merged to 4.0. Please refer to AOO 4.0 wiki.
The AOO 3.5 release is a minor release with focus on bug fixes and enhancement, improvements, and features with no or smaller UI changes.
A more detailed release planning, including the release contents and schedule, can be found under AOO 3.5 Release Planning
The related release notes can be found under AOO 3.5 Release Notes
The related test and QA plan can be found under AOO 3.5 QA and Test Plan
Regular built developer snapshots for early testing that can be found under Unofficial Developer Builds for Apache OpenOffice 3.5