ISO 14001:2026 was published on 15 April 2026. The 2015 edition was withdrawn the same day. If your environmental certification names ISO 14001:2015, and almost every current certificate does, your transition has already started whether anyone has told you or not.
This is not a cosmetic reissue. Four things moved, and every one of them breaks cross references in a document set written before April 2026.
Done independently of any certification body, which matters here: your certifier finds the gaps at audit, when they become findings. This finds them while they are still just work.
The first conversation costs nothing. If your system is already in good shape I will tell you that, and you will have spent twenty minutes rather than a budget.