I bought this week my new RPi3 and Wifi and BT worked fine apparently!
Wifi connected to my home network perfectly, but I had some issues with integrated BT. I use an Apple Mouse and that is working fine. The problem is with the Apple BT Keyboard, it repeats keys, sometimes loses connection...
I decided to plug a USB mouse and use BT keyboard. Now keyboard works fine. I also tried pluging in a BT dongle, disable the integrated bluetooth
and connect mouse and keyboard to the dongle. That also worked fine!
By the way, I'm using a 1.2A/5V power supply, but RPi recomends 2.5A... maybe that's the problem... Tomorrow I will have my new 2.5A/5V power supply and I will try with the integrated BT again... Let's see what happens!