Of all the days to be stuck with a bunch of real world nonsense, it had to be today, the day da Orks drop.
Yay! My 5th edition weird conga line formations for getting as many mobz in range of the KFF is back baby! 5++ for days! Bonus that the Painboy gives out 6+ FnP as well Combined with the new to wound chart, Ork infantry hordes are now a lot tougher. Consider that a BS4 S5-7 shot has about a 25% chance of dropping an Ork in range of those two. That means 10 scatter bikes should drop only 10 Orks per shooting round. That was true last edition for just ONE unit if it had both the painboy and KFF in the unit, but now it works for everything in range!
The combination of the best parts of the 7th ed book (ere we go) and the 4th ed book (mob rule based on unit size) with some new stuff (the ability to use the leadership of a nearby mob is great for those small specialist units)
The new Waagh ability is different but potentially better as you don't have to call it at the beginning of the turn and it isn't a one time use.
There's been no confirmation on Orks keeping furious charge, but with the changes to the to wound rolls that probably won't matter.
The Big Choppa is a big winner depending on points. S6 vs S8 is totes worse, but having a reliable 2 damage and -1 save without the -1 to hit penalty seems to really balance it out.
No word on movement rate, but if we assume 6", then a unit of Orks has a 6"+3.5"+8.32"=17.82" threat range every turn as long as a Warboss is within range. That's some turn 2 charge potential. Good stuff.