Stable vs Beta versions, and the automatic update checker:
Note that 11.1 Beta 1 comes after 11.1. Think of 11.1 Beta 1 as being all the changes in 11.1, plus beta versions of changes which will eventually be part of 11.2.
(The product versions on the installers etc. are 22.214.171.124 for the stable release and 126.96.36.199, .2, .3 for the three betas after it, similar to before.)