Onion Service version 2 deprecation timeline dgoulet July 02, 2020

From today (July 2nd, 2020), the Internet has around 16 months to migrate from onion services v2 to v3 once and for all.

Announcing the Vanguards Add-On for Onion Services George Kadianakis July 20, 2018

Fixing the guard discovery problem in Tor itself is an immense project -- primarily because it involves many trade-offs between performance and scalability versus path security, which makes it very hard to pick good defaults for every onion service. Because of this, we have created an add-on that can be used in conjunction with a Tor onion service server or a Tor client that accesses Tor onion services.