To sum up for you guys:
Eternal Crusade is a Free to Play MMO with Premium Options.
If you play for free, you can only play as an Ork Boy, being that most people won't pay money on it, this is part of the developers plan to make Orks numerous. It will take 5 Ork Boy players to take down one Space Marine.
The other races you can buy (unknown price but it'll probably be $10) are Space Marines (Dark Angels) Chaos (Iron Warriors) and Eldar (No info). These will all have distinct class paths, some you can unlock by working hard and doing what your factions player elected leader tells you to do (For example, everybody attack this fortress, if you do you get more rewards for helping the War Effort, if you don't, it doesn't matter, you can earn stuff other ways) and some you can buy. Chaplin was mentioned as a unlock for Space Marines.
The AI race is the Tyranids, an easy "Everybody must stop them" race. The chances of Necrons and Dark Eldar entering? Unknown, but I don't see why not. Deathmark Necron. Awesome.
You can also unlock fortresses, airships and vehicles, whether or not this are with money or in-game currency is unknown, but you CAN buy (with real money) upgrades for them.
The game will enter beta in 18 months and scheduled to go live 6 months later (24 months in total at least).
I am optimistic. Since UbiSoft screwed PC Gamers over on The Division, I am happy to see a 3rd person shooter MMO come to PC. It sounds A LOT like Planet Side 2. Space Marines being a premium race is a good idea, it'll stop many, ahem, younger (and younger mentallity) players from running around in Power Armour. It also makes them rarer and more like the real Space Marines. In Fluff, it'd take 20 odd Boyz to take a Space Marine down (assuming SM was retarded and barely fought back). If Space Marine vidya is too be believed, one can solo an entire Warggggg. And also be Chaos corrupted or a blank.
So, it seems good. PlanetSide 2 in 40k Universe. Just hope for the best.