R7.1a R7.1b Open AT Release Note documentation

The release note of the R7.1a and R.7b is missing. Actually there is a preliminary version of the R7.1a but it does not include relevant information. We are hunting for information what has been changed and this information could be really usuful as the previous version R7.1 final ( rather beta ) has a lot of issues.

Does anybod have info about the new OS versions?