According to BGR, the iOS 8.1.3 update could be releasing as soon as next week. The site reports and increase in traffic, assumed to be Apple employees testing the firmware before its public release.
As always, folks who would like to keep their Jailbreak should steer clear from updating, until there is word from the Jailbreak team that nothing has been patched. In other news, MacRumors reports an increase in traffic from firmwares iOS 8.2 and iOS 9.