As I understand it, Exchange SE RTM bits will be identical to Exchange 2019 CU15 (plus post CU15 release SU's if applicable) bits with these exceptions:
"
- The License agreement, an RTF file shown only in the GUI version of Setup, will be updated.
- The name will change from Microsoft Exchange Server 2019 to Microsoft Exchange Server Subscription Edition.
- The build and version number will be updated.
"
(Exchange Server Roadmap Update - Microsoft Community Hub)
I'd never say never when it comes to potential issues, but if we can trust Microsoft with CU's, SU's and HU's most of the time, then surely, we can trust Microsoft to update a text file and two strings, without incident. 🤞😁:four_leaf_clover: