The link you just reposted does not mention autofill. Below is a portion of the notification of outages from the CRA. It says "Auto-fill my return and Express NOA services will be unavailable from 11:00 p.m. on Friday, February 2, 2024, until 6:00 a.m. on Monday, February 5, 2024. (Eastern Time)" It makes no mention that this restart of the auto-fill service does not apply to posted 2023 tax data.
The following is a response I received from UFile support
The service "Auto-Fill my return" will be available in UFile 2023 in the next version (27.10) from the next week.
Thank you
Regards,
Sritharshini
On behalf of the UFile Team
When will version 27.10 be available so the auto-fill will work?
The T3 EFILE and T1135 T3 web services will be unavailable from 11:59 p.m. on Friday, January 19, 2024, until 8:30 a.m. on Monday, February 19, 2024. (Eastern Time)
The Pre-authorized debit web service will be unavailable from 11:59 p.m. on Friday, January 26, 2024, until 6:00 a.m. on Monday, February 19, 2024. (Eastern Time)
The T1 EFILE, ReFILE and T1134/T1135 web services will be unavailable from 11:59 p.m. on Friday, January 26, 2024, until 8:30 a.m. on Monday, February 19, 2024. (Eastern Time)
The transmission web service for authorizing or cancelling a representative will be unavailable from 8:00 p.m. on Friday, February 2, 2024, until 6:00 a.m. on Monday, February 5, 2024. (Eastern Time)
The Auto-fill my return and Express NOA services will be unavailable from 11:00 p.m. on Friday, February 2, 2024, until 6:00 a.m. on Monday, February 5, 2024. (Eastern Time)
The Express NOA service will be unavailable from 11:00 p.m. on Friday, February 2, 2024, until 6:00 a.m. on Monday, February 19, 2024. (Eastern Time)
The EFILE online service "Transmission History" will be unavailable from 11:00 p.m. on Friday, February 2, 2024, until 8:30 a.m. on Monday, February 5, 2024. (Eastern Time)
Note: There will be no interruption of service to the following EFILE online services: "Register for EFILE", "Yearly renewal" and "Account maintenance".