"Robert Watson has started the automatic posting of open issues for the upcoming 5.1 and 5.2 releases. The list for 5.1 is automatically posted to -current every other day, with the most up-to-date version found here. The list is divided into the following four sections: "Must Resolve Issues", "Desired Features", "Documentation items that must be resolved", and "Areas requiring immediate testing". Read it at KernelTrap.