With the new versioning schema, 9.4.7 is a general sustaining branch. I work with many customers who have it in production environments now. I've suggested they hold off on upgrading to 10.x until 10.0.2 or later to let it bake in.
You can check SOL8986 (
Click here) for details on the software versioning.
* General Availability (GA)
When a branch has the potential for additional minor releases, the branch is in the General Availability phase.
* General Sustaining (GS)
After a new major release is available, the existing branch enters the General Sustaining (GS) phase. F5 Networks does not add features or introduce changes in behavior in the GS phase. The only product changes will be for maintenance and sustaining purposes.
Aaron