The listing for the new BD already mentions a 2K scan, as reported everywhere,
including by Kino.
I can't find an online source (just ubiquitous mentions of the new BD) for the previous BD scan being 2K. But in 2012 or so, I clearly remember it being said of all five then new-to-BD films in the Kino Selznick Collection. I'm sure Kino can easily verify this, but unless you want to drop them a line, don't worry about it.
FWIW, for silent and classic-era titles, the overwhelming majority are still scanned and restored at 2K. Even the few expensive, high profile films that get scanned at 4K are usually still restored and timed at 2K. This is mainly due to time, cost and data storage issues.