Hi Tim- welcome to 4WM
2 days battery life from any WM or Symbian smartphone is considered to be very good- you can't compare these to normal phones, or non-phone PDA's because of the converged functions which use power even when in standby. Most users get into the habit of charging overnight, or via a USB connection if in an office during the day.
WM6.1 has not been formally released yet, but the carriers, and direct sellers like HTC have the option of buying the update and releasing it to their customers. They will all require some tweaking before the ROM's are stable enough to release. There are some 'unofficial' WM6.1 ROM versions out ther now, but they all seem to have issues affecting stability.
Windows Update is a carrier option, and none in UK, as far as I know yet subscribe to it. WM6.1 won't be available via Windows Update, but when it comes will be a full ROM update.
Rest assured we will be first with news of official updates
