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Here is the link to the new patch info.
Patching now while I read all the threads here about how WT is p2w.
Edit: They were very old threads. However, I will say, this game is free-to-play + pay-to-reduce-serious-grind. If a dude paid $100 and got 350+ hours of entertainment until he got bored, I'd say it's not so bad.
If you spend $15-20 and focus on developing one nation in air or armor, you could set yourself up very well. That's all I've got say after 440+ hours. I've probably spent $150 or so and I don't feel bad about it at all. Now I can play f2p with all of the nations without undue grind, though I do usually pay for premium membership daily whenever I feel like it (more xp, research points, etc.). You can pay for longer 7 days and up, etc. for a deeper discount the more time you pay for.
I have enough fun, so I don't have anything to complain about.