The update that was supposed to add a few high-tier dual-barreled tanks to the Russian tech tree sadly fails to do so, leaving the Anonymizer feature as the only big change for World of Tanks 1.7. However, Crew Directives — previously available for bonds — can now be purchased only for credits.
https://www.notebookcheck.net/World-of-Tanks-1-7-comes-with-nickname-anonymization-but-no-double-barreled-tanks-or-better-matchmaking.447018.0.html