Bought myself a Lumia 630 yesterday. Set it all up and then went looking for Quiet Hours to find out it requires Cortana which tells me it isn't available in my region (set to UK). Bit of googling and set myself up on the development preview thing, changed my region and language to US and Cortana started working.
Any ideas when it will work when set to UK?
After WP8.1 Update 1, it'll work. I'm on UK Cortana now...