Basic a new build name or you guys really think that they changed anything in 1 day? I lost my hope, they will never implement the user's feedback, maybe 1 in 1000 ideas. Some countries already have December Security Patch, that shows how nothing is changing in the US beta
I doubt they will implement any substantial changes this late in the beta program and personally I can't tell if they changed anything in this build. I do however feel that the OS is more stable and fluid in my case.
