Changing region to US cant affect store, when you try to purchase and app it will say you have no payment method setup. Am sure you could get round this too but couldn't be bothered trying.
I have noticed with 8.1 that podcasts, voice in general from apps like Health & Fitness and calls that sound level is much lower over Bluetooth (Nokia BH505) than before, barely audible now...
I'm not seeing half of these, footnotes and endnotes would make things easier for our students and still no sign.
Been waiting for this one too, have you had time to test how well the tracker works behind the lockscreen yet Paul? I will try it out tomorrow on my daily walk to work.
Small uptake of 8.1 could be down to the issue with it not showing in store for quite a few.
For instance we replaced 10 PCs, with touchscreen all in ones just before Christmas and so far...