Thanks for the update, Emily.
I'd just add that anyone interested is welcome to nominate him/herself as a member or contributor to the JSR. We would like to have as many voices as possible, even outside of the MicroProfile community.
A nomination is easy - you just need to create or use an Oracle account (easy) and become a member of the JCP (a bit more complicated, but not much). Have a look at this
Becoming a JCP Member. If you find becoming a full member too complicated or against the will of your employer, you can always become an
associate member in a matter of days, without thinking about legal implications.
The JSR number is
382. The type of nomination is Expert Group in case of a full membership, contributor in case of associate membership. Then fill in some personal details and that's it.
If you work with any other framework or library than MicroProfile or Java EE that provides some kind of API for configuration, I encourage you to ask the authors of it to collaborate on this JSR and even join it as members or at least as contributors so that they can influence the specification to better fit their needs.
Ondro