Hopefully further expanded S-Pen enabled apps, and hopefully improved pressure sensitivity on the pen would be the most important for the note.
It will be interesting to see if it does indeed have 3GB ram as opposed to 2GB on the S4.
The S-Pen alone makes the Galaxy Note better then the GS4. The Galaxy S4 copied the galaxy notes features, but made them for non s-pen
of course it would, only a big screen cant help sell the device, there would be new software AND hardware features, they also have a developer conference on Oct 27, so expect improvements and more features.
S3 had 1GB of Ram, Note 2 - 2GB. S3 has 1.4Ghz, Note has 1.6Ghz. Note 2 has a bigger battery and S-Pen.
If the Note 3 follows that trend then it will certainly be better
the S pen will be a big selling point too...it's a great phone with better battery life too. It's to many people a bigger S4. It's a great phone but doesn't mean it's certainly better than the S4.
guess we will see what features it comes with.