Further improve wording of accepted clause

Author: jvican

sips/sip-submission.md

@@ -132,8 +132,9 @@ During every iteration, the appointed reviewer presents the changes (updated
 design document, progress with the implementation, etc) to the SIP Committee.
 Based on the feedback, the SIP is either:
 
-1. Accepted, in which case the committee proposes that the compiler maintainers
-   include the new language feature in a future release of the Scala compiler.   
+1. Accepted, in which case the committee hands over to the compiler maintainers
+   to indicate the earliest version of Scala that can include the language
+   change.
 2. Rejected, in which case the SIP is closed and no longer evaluated in the
    future.
 3. Under revision, in which case the author needs to continue the formal