The MongoDB C++ driver is undergoing changes as part of the upcoming MongoDB 2.6 release, with the aim of improving development and usage experience for everyone involved. The driver will be maintained independently of the server sources from a new repository on GitHub, with two release streams: `26compat` offering minimal disruption and a drop-in replacement, and `legacy` providing more aggressive divergence and new features. Existing users are advised to switch to the new repository and use the `26compat` release stream for testing, but can continue using the server repository build until 2.6.0-rc0. Users who prefer stability will be able to track the legacy release stream once it's stabilized. The changes aim to minimize disruption while enabling rapid evolution and improvement of the driver.