The End of Times...interesting ...
For orks, what does that really mean? Like OD said, we've been relegated to the periphery for years...We've been passé for so long, most have forgotten what it was like to be a primary player (correct me if I'm wrong, and I'm sure that there are those who will, but we haven't been in the limelight since Codex: Armageddon...those were halcyon days...). Having said that, look at the treatment orks are finally getting from Black Library with the Beast Rising series. Personally, I'll keep playing when I can, converting as I want, and collecting the odd bits and pieces consistently regardless of what happens...Whatever happens, our race will still be the winners, 'cause we never lose...we never retreat...We adapt and keep coming back for more...
AoS treatment of 40k wouldn't be the death knell that everyone on other forums are carping about. The real losers would be those who rely on shenanigans and power lists to "win at any cost". I'd enjoy a bring all ya got and fight until someone cries "uncle" fight...haven't had that kind of fun in years...
As an aside, I do have a fledgling SM force, Howling Griffons, so I'm not too concerned...