That said, I feel a good basic support for cross platform standards and native clients is essential to get users (basic) access to the system. Mind if we would have kept alive the previous Mobile Server solution for GW we still would be stuck in the past. Well, everybody is more or less happy now we have the GW Mobility Pack.
This contributes to the idea, which is true for the device market, that a user does want to use the default applications on the device and not want to download another (groupwise) app to access its corporate mail/calerdar/tasks/etc. I've not tested this yet myself nor had Novell at the time it was discussed (last Brainshare) and they doubt it would be official supported release but these protocols added in R2 should work also with for example Evolution on Linux. The work done in GW2014 R2 for Mac ( ) does also benefit Linux as I remember.