What are the chances they will be convinced to delay the decision taking place until next year?

While the tzdb maintainer(s) can work hard to implement a change (less than six days before the next transition), the process of many organizations pushing that change out through multiple layers of operating systems, application software, and embedded systems (like smartphones and networking equipment) is much longer, and this will likely cause a lot of trouble. The tzdb environment has recommended such changes be made at least a year before they are to take effect.

On Wed, Mar 16, 2022 at 11:21 AM Mohammad Ali Tofighi via tz <tz@iana.org> wrote:

Hi.
Recently the Iranian parliament has decided to remove daylight saving from the Iranian time zone, eliminating the one-hour shift in the summer time. Hence, it is always going to be UTC+3:30.
This is not their final decision yet and there is a final confirmation to be made, but I just wanted to inform you about the update to prepare possible modifications. I'm a software engineer and if we have the update on tzdata package as soon as possible, the software companies can adjust themselves accordingly.
Please read these official news:
https://www.isna.ir/news/1400122419045/
https://www.yjc.news/00Xw0k

Regards,
Ali Tofighi