Answering your second query first, as license is tied to device IMEI that is not a problem. Xperia 10V is certainly supported with currently beta firmware available, but as you can’t purchase a license yet this accounts for the disparity. As regards Bluetooth is depends upon what purpose(s) you want to utilise.
i see,i didn’t read this part:“However, there is no licence for the Xperia 10 IV (XQ-CC54) and 10 V (XQ-DC54) yet”
bluetooth was meant for earbuds,but it doesn’t matter now;
i wanted to upgrade from the XA2 and thought i’d get the newest phone available so i won’t have to do it again in the near future,
but considering that the 10 V is already a 1.5 years old phone,i’ll just wait for it to have a license.