Ok Google or Ok Google Now?

I feel Google is being a bit inconsistent with Google Now and their hotword for activating it. On Moto X, you say "Ok Google Now" to activate it but in the recently updated Now, you say "Ok Google" which IMO is shorter and quicker to say compared to "Ok Google Now" while still remaining consistent with "Ok Glass". Will Motorola change it for Moto X to have people say "Ok Google" to be consistent with the actual app itself or what?

Also, to anyone that has a Moto X, has your Google Search APK updated yet? If so, is your hotword "Ok Google"?