Updated yesterday from 8 to 8.1. Much happier with the results and the only thing I had to do was re-register my XLN products. I did make sure I had all the interface updates and Windows 8 updates before I made the jump. It really was quite painless. We all know all our rigs are different. All I can say is I am very happy with the update.

8.1 x64 (new install) running fine here.  I actually have very little ancillary hardware with 8.1 drivers.  Many of my devices only actually have Windows 7 drivers - including the Echo Audio Layla 3G.  Still, everything is working fine here. 

gswitz
I upgraded to 8.1. It wasn't a new install.

 
Same here...

Haha, Alex!
 
You know I am originally from Ukraine, in United States for 15 years. before I moved here, this is exactly how my balcony was looking! Thanks for the share- I will take it- love the pic.
 
The Asus tech support could not tell me clearly, should I installe drivers from the 8.0 section while I have 8.0, and then after IO update, install 8.1 drivers, or install all 8.1 drivers before the update. I am feeling the right way would be update with what you have and then install 8.1 drivers. However, I would make sure AI Suit is not installed during the update and no USB 3.0 boost activated. I would also have PS2 keyboard and mouse available in case you loose USB like I did. My motherboard did not have that, so I had to reinstall.
 
Last night I turned my computer, worked on it for 3 hours, and then realized- my 2nd monitor is not working. Took me a minute to figure out that it does not work because I set my BIOS to optimized defaults, and that disabled onboard video card. It made me think- I am not looking for any trouble and may be I should wait.