Update README.md with link to proposed jun 2024 changes

README.md

@@ -98,11 +98,12 @@ namespace exists which contains a subset of the functions from `tick.core` which
 
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-As of March 2024
+As of June 2024
 
 * [Temporal](https://github.com/tc39/proposal-temporal) has semi-stabilized at
   `ecma stage 3`, meaning implementors
-  can still suggest changes - although at this point any changes will be superficial. 
+  can still suggest changes
+* Changes [have been suggested](https://docs.google.com/presentation/d/1PPMAxVnVjFwRPuJwOvVsw9nZLQ6jDM8Hd5PNO0Grp4I/edit#slide=id.p) - and Tempo will need some changes if those are accepted. It shouldn't affect Tempo API though.    
 * a polyfill (e.g. [this](https://github.com/fullcalendar/temporal-polyfill)) of Temporal will be required for all javascript environments.
 
 ```html