Albion's season ticket renewals for next season have already broken through the 20,000 barrier.
The club expects the figure to rise appreciably before Thursday's 5pm deadline for upfront payers.
Chief executive Paul Barber said: "It has been a phenomenal initial response and to have so many renewing, so quickly, is excellent. It would be easy to take it for granted, but the loyalty shown by Albion fans is quite superb."
Albion are investigating extra benefits for fans at the Amex on a matchday, including free wifi for season ticket holders, an additional bar and more external food and drink options and entertainment.