I just did one of the checks of upcoming flights I regularly do in the weeks and months leading up to upcoming trips. Many airlines don’t send alerts this far out. It appears Turkish is one of them since there is a change in the leg from IST to AMM for our March J&E.
I checked the details- the flight takes off at the same time, but will now arrive in Amman later, EXACTLY one hour later. My initial thought- there is a time change. Yup, Jordan switches to DST at the end of Feb- Turkey and Egypt do not. Other than arriving at midnight instead of 11 pm, it is not a big deal. You would think their flight scheduling software should automatically adjust for seasonal time changes. 
Unfortunately, the Turkish website wouldn’t allow me to confirm/accept the change. “No seats available at fare class” kept popping up despite the “new” flight having the same flight number, aircraft type, etc. At some point I guess I’ll need to try and reach them by phone to ensure all is copacetic. 