In a news posting (back in February 2022) on the Alaska Airlines (ASA/AS) website there was a mention of their lounge expansions at Portland International (PDX) airport. Including the opening of an "express lounge".
Now for something fun, different and super convenient. We're adding a temporary 'express lounge' at the newly-renovated Concourse B for our guests traveling through that section of the airport. The mini-lounge is scheduled to open in the summer with seating for up to 35 people near Gate B2, offering guests a selection of beverages and light snacks before their flights.
Alaska Airlines News - February 9, 2022
Recently, a new lounge has appeared on the Alaska Airlines lounge page. This lounge is showing up in Concourse B, which previously did not have a lounge.
Without a formal announcement, we can't be 100% sure, but it does appear that the Express Lounge in Concourse B, near Gate B2 is now open.
We should get a formal announcement on this soon if it is true. But for now, if anyone is at PDX Terminal B, please let me know and send a photo!