Today, I released the MongoDB Perl Driver v1.0.0 RC3 to CPAN as MongoDB-v0.999.999.6-TRIAL. It has only a handful of small changes, so might be your last chance to test a release candidate before a stable release is shipped.
As mentioned earlier, please read the MongoDB::Upgrading document, which describes the major changes from the “v0” series to v1.0.0.
Testing the release candidate
You can install RC3 from CPAN like this:
$ cpan MONGODB/MongoDB-v0.999.999.6-TRIAL.tar.gz
If you encounter problems or have questions, please open tickets on the MongoDB Perl driver bug tracker.
Barring any show-stoppers or urgent changes, the stable v1.0.0 MongoDB Perl driver will be shipped to CPAN around the end of August.