This is the acceped answer from support...
Thank you for contacting MathWorks Support. The MCR page does show MCR 24.1, which is the correct version. I am guessing you would have expected it to say 24.2, which makes a lot of sense. However, I downloaded the R2024a MCR from the link you provided, and it does seem to show update 2. You can confirm this by downloading the .zip from our website. You should see a file called "Versioninfo.xml". If you open this file, in the "description" field, it should say "Update 2".
I suspect there is a lag between the MATLAB version appearing and the corresponding runtime version. Either way this is now fixed.