Hi, Sean and Thomas
I don't want to comment precisely on the target release date, since I do not want to disappoint if the schedule slips, for whatever reason.
However, I do hope that we can release an update to R Open within a matter of weeks.
The simplified set of engineering tasks is broadly speaking: include the new version of CRAN R, bundle the Intel MKL, update the build for all of the platforms we support, test and release.
The release dates are on a schedule together with the other R engineering work we do, e.g. R Server for SQL, Hadoop, HDInsights, etc.
Thank you for your patience and continued interest in Microsoft R Open.
Andrie