Zions Bank, the Salt Lake City-based regional bank, reportedly will add Apple Pay capabilities this week.

Should the capabilities be added, Zions would be the 40th financial institution to sign on to Apple Pay. Zions, which does business in 11 states in the West and Southwest, made the disclosure in an offhand tweet responding to a customer inquiry late last week.

Apple has been signing up financial institutions at a reasonable rate — about 10 new partners were introduced over the last few weeks. Recently, for example, the technology giant added several credit unions, including Security Service Federal Credit Union and Mountain America Credit Union.

First National Bank announced today that it would be joining Apple Pay this quarter, although it did not release a specific go-live date. In announcing that it would add Apple Pay, FNB explained that “With Apple Pay, we will expand our state-of-the-art online and mobile banking offering to incorporate the latest in payments solutions while keeping customer security a top priority.” In other words, this is as much a marketing play as a product initiative for at least some of the FIs entering the Apple Pay ecosystem.

First National Bank is a subsidiary of FNB Corp, a publicly traded company [ticker; FNB] with a market capitalization of about $2 billion.