Cosmo has sent me a fantastic write up, outlining all the new features in IDS 11.50.xC6. I thought I'd share some of it with you:

Using an RSS Server to Take a Backup

It is now possible to make an archive of an instance from an RSS server. This will help reduce the I/O load on the primary server. The backup is no different to one made on the primary and can be restored to any node within the cluster.

Fernando has posted a (long overdue) blog update, discussing some of the new features in 11.50.xC2. It's available here.

I've also heard from reliable sources that performance is improved. ;-)

Update: I just thought I'd highlight this point that Fernando made, because it's come round to bite at least one of my customers: