We all know that Ford only knows the answer to the question whether “Ford stopped updating SYNC 3”
However, the lack of updates for months looks like that 
SYNC Region: EU
Navigation Variant: Nav
Manufacturer Year: Pre MY20
Install Type: OEM
Old SYNC Version: 3.4.23188
New SYNC Version: 3.4.23188
Do you have a error message, if so what is it?
None
Update Method: CyanLabs Syn3 Updater
Syn3 Updater Version: Latest
Syn3 Updater Documentation Read: yes
Syn3 Updater Log File
N/A
Ford is still supporting Sync 3 with the updates. The last Sync 3.4 update was 23188. The last Sync 3.0 update was 23219 and 23220. Since Sync 3 is no longer under development, Ford will only update bug issues and security concerns. Sync 4 has been the focus for a while but it is soon being replaced by Android Automotive. (Not Android Auto). The 2025 Explorer already runs the newer system.
There has been no announcement of sunsetting Sync3 at this time. Sync 2 was sunsetted just recently.
Thank you for the response.
Is the Sync 3.4 update 23219 and 23220 that we could cosume using Sy3lUpdater ?
No. Those are for Sync 3.0 only.