Some users have reported seeing a patch from Microsoft that resolves the battery life and cover issues created by the December updates to Surface Pro 2’s. If you didn’t install the December update, you won’t see the update but for those of us that did, this is a welcomed patch.
The official statement from Microsoft via ZDNet:
“This weekend we released an update that addresses the unexpected wake and battery drain behaviour experienced by a small number of Surface Pro 2 customers who installed the December Windows Update. This should have no impact on customers who had not received the December update. We are working hard to deliver the rest of the December update to those customers who had not received it prior to it being removed from distribution.”