It hasn't even been 24hrs.
There are a lot of variables involved with battery life. And those variables often differ from person to person.
But, for the sake of the thread, my iPhone 5 has been in standby for 3:44 with 1:19 usage with 79% left with all settings on. The main culprit of battery usage thus far has been the home & lock screen at 51% and I am not sure why, as beta 5 wasn't anywhere near that.