I wish it had wifi but not likely to get Wifi or new plane(s) for this route anytime soon. Most YYZ's passengers aren't going to pay up for wifi as to LAX/SFO/JFK.
Keep an eye on the registration number... it will tell you which aircraft EVA has scheduled for the flight.
https://www.flightradar24.com/data/flights/br35/
I was on 16717 going from YYZ to TPE in Feb and 16705 on the way back. 16717 has pay per use SMS/email. 16705 has nada, not even pay per use or satellite phone.