Release notes > VBUC Phone Firmware
Release dates: Q2 2026
Please refer to tables below for release notes for firmware updates for specific phone models.
* Dates subject to change.
| Vendor | Model | Firmware version | Release Notes | Start firmware rollout * | Firmware rollout completed * |
| Poly | Poly Edge E100, E220, E300, E320, E350, E450, E500, E550 | 8.4.1.0068 | Poly Voice Software release notes 8.4.1 | May 14, 2026 | May 22, 2026 |