So far so good...
Upgraded to 1.13NA and internet is working fine.
I have a DAP-1522 in my bedroom on bridge mode manually set to 802.11n 5GHz mode, signal strength holding steady at 84% (which is normal for me). Transfer says 243 Mbps, but I will have to test tomorrow (wife is asleep...shhh).
I have a PC and Xbox 360 connected to the DAP-1522, with the connection dropping occasionally. I've had continuous problems when streaming HD video and live TV in Windows Media Center to the Xbox connected to the bridge, so I'm hoping this update might fix this problem since after the update i'm reaching up to 94% signal strength at times. Will report back after testing tomorrow...