The primary goal for Firebird 2.5 was to establish the basics for a new threading architecture that is almost entirely common to the Superserver, Classic and Embedded models, taking in lower level synchronization and thread safety generally.
Thunderbird 3 Release Candidate is a preview release of the next major
version of Thunderbird and it is being made for testing purposes only.This release does not represent the final product. So do not use Thunderbird 3 Release Candidate in a production
environment.
