quarto version bundled on pro vs desktop

Was reading this topic about how to set up a custom quarto version (Change RStudio Server Quarto version)

I am curious why Rstudio desktop and Rstudio pro for the same 2024.12.1 version, don't come with the same bundled quarto?

This is the desktop version info i have

RStudio 2024.12.1+563 "Kousa Dogwood" Release (27771613951643d8987af2b2fb0c752081a3a853, 2025-02-02) for windows
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) RStudio/2024.12.1+563 Chrome/126.0.6478.234 Electron/31.7.7 Safari/537.36, Quarto 1.6.42

This is the posit workbench rstudio pro version info:

RStudio 2024.12.1+563.pro5 "Kousa Dogwood" Release (2fa392984e62c37f40421c5ea3a99786509e33fe, 2025-02-05) for RHEL 9
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36, Quarto 1.5.57

So it's Quarto 1.6.42 vs Quarto 1.5.57. Why?