RPi Zero 2W "now" used on ENGINEER Kit 2

According to the e-manual web site and “reading between the lines”, the Engineer Kit 2 may have a “new edition” whereas the RPi Zero 2W is used.

The new RPi OS image is a 7.2 GB ZIP file (more than 1 hour to download for my ISP service), while the previous one was only a 3.7 GB ZIP File. So it looks like that more software features will be introduced or that the new OS may be a 64-bit one? Don’t know when the new edition of ENGINEER Kit 2 will be released though!