1.08 GB Installation. Installed: 1. Safari seems to be A LOT FASTER. It was so slow in DP2 in my 15" rMBP. 2. "Show info" works again in finder. 3. I'm still having wifi drops when connecting apple wireless keyboard. 4. When you switch the volume down to the silent using f11 key, you can put volume up again using f12 (in dp2 i got hooked in silent till you switched volume up in the status bar slider, but feels buggy. 5. Some apps that didn't work in dp2 just works now (tune4mac, clear day.) 6. No iBooks Just post your impressions and i'll collect them.