Sorry buddy but when I upgraded to IOS 8 a few days ago, immediately prior to a long haul, there was no NTC or e-mail indicating any potential problems - and having just returned from leave I hate to dissapoint you by revealing that I don't spent my time off on Yammer. Boeing Newsletter? Are we reading the same newsletter?
First indication of a problem was trying to review alternates and finding the APP crashes continuously.
Of course I'm sure that Navtech was not aware of the fact that Apple was migrating to IOS8, had never considered testing the software with the Beta versions of IOS8 and cx and Navtech had never considered notifying the end users TIMEOUSLY through APPROPRIATE channels such as a NTC. The NTC was issued today - unfortunately I was in the air at that stage and not one of of our crew was aware of any potential issues.