Been waiting for this for a while.
Everything looks great to me:
New (current) 24mp sensor
Image stabilization
Dust reduction sensor shake
New hybrid AF
Slightly smaller package
Really, the only negative over previous versions, is the loss of the flash. I can live without that though, as I hardly used it on my previous GR.
Hopefully the new lens resolves as sharp as the old one, with the increased resolution.
Also, interested the see how it's priced. Hopefully in line with previous GR launch pricing.
It will definitely be on my shopping list. Shame we have to wait another ~6 months.