Maya 2022.1 provides Bifrost Extension for Maya version 2.2.1.2, which fixes some important evaluation issues in Bifrost.
Bifrost Extension for Maya version 2.2.1.2 also includes the features of 2.2.1.0 and the fixes in 2.2.1.1: improvements to terminals, particles, scattering, fields, as well as new sample graphs.
See the Bifrost 2.2.1.0, Bifrost 2.2.1.1, and Bifrost 2.2.1.2 Release Notes for a list of recently added features and bug fixes.
Remember that you can always download the latest version of Bifrost by visiting the Bifrost Download Center.