Actually, most of this is wrong by a little bit. But that little bit is important.
1) Deep Strike is LESS dangerous. You only scatter if you're within 18" of an enemy. If you're within 18" you scatter as normal UNLESS you have a beacon (Icon). You can make a combat OR ENGAGE (i.e. assault at your base move stat) action after deepstriking. And if you scatter into mishap territory you only take d6 critical hits (which, for daemons, you get your invuln against). No more repositioning/back in reserves/destroyed bull. With things like fiends being fleeting beasts (i.e. movement of 9") this is HUGE. Yes, any squad that they arrive within 12" of can shoot at them, but only units with overwatch get to shoot if they charge, so usually only one salvo.
2) Flame sweep. Tzeench flamers just got ridiculous in cc.
3) wings = flying infantry (read: NOT Jump Infantry). HUGE for thirsters and princes.
4) Seekers and Fiends now charge 27", hounds charge 21".
Daemons got wtfbusted by the new edition. They may be new top-tier. Seriously. Will need a lot of testing, but they got powered up like whoa.
Eldar did get boosts. However, re-read the rules for assault weapons. You only get the bonus attack for an assault weapon if you have a dedicated CC wep in your wargear. Avengers, Guardians, and Dragons do not, so they are the same in cc as they ever were: mediocre at best. DBFs are good now because of the extra 3" fire and flame sweep in CC (also fun for covering fire).
Banshees got ridiculous with the new fleet and power weapon rules, but Scorpions kinda got left by the wayside.
Also, you can now make an engage move out of a (combat-) moving transport. Yes, you get to assault out of ALL transports now. Eldar around the globe leap for joy.
Eldar jetbikes got a HUGE boost, so did rangers/pathfinders. Storm Guardians being able to use flame sweep or fusion pistols in CC is pretty big, too. All-in-all, both armies got MUCH much better.
Even if this is a fake, I don't care, because it looks like it will be a fun game to play. If it's fake, GW has it's work cut out to put up something that's better than this.