Trending @Infosys; Promotion letter

In january month my manager recommended my name in promotion list and he discussed that i will receive it around april as he got confirmation email . I received one confitmed mail that i have been promoted as test lead IJP but there is no CnB attached. Shall i reach out to HR for this or shall i wait. One of my colleague who received promotion in previous quarter told that she didnt received mail like this and received confirmed promotion as test lead with CnB attached