There are a number of posts about wxWidgets 3.2.0 RC's and final versions that you should be reading about where devs are up to with wx3.2.0, but at this exact point in time it is too new to update the nightly IMHO as the most of the C::B devs are in the process of updating to it for their local builds or have just done it in the last few days/weeks.
If you want to use it ASAP then I would recommend creating a new post in the help forum if you do not know how to build wxWidgets 3.2.0 and C::B. If you do know how to build wxWidegts and CB then there should be nothing stopping you once you make the appropriate build changes from wx3.1.x to wx3.2.0.