In my excitement over the NX300, it didn't even really occur to me to look up the next upgrade to the NX1000.
Having had a brief look this morning, all I can say is that it looks like a dull update. From the info available, doesn't look like an awful lot has changed.
Very different story to the NX210 to NX300 update, which seems to bring a huge number of updates to the table.
Certainly, if I weren't upgrading to the NX300, I would not even consider the NX1100 as an upgrade to the NX1000.