Reaper of Souls - Blizzcon Round-Up

[Aahzmadius]

I would say it depends on where you're playing. If you can do extensive adventuring in Inferno on vanilla, it makes sense to grind out some paragon levels before RoS ships. If you're mostly in NM/Hell, then I agree that waiting makes more sense. And of course, the wait is getting shorter-less than 2 months.