The train station has been renovated and it looks much better now. It feels like a western country…read moretrain station... the old one was... well... old (don't even get me started on the toilets).
The new one has all the commodities you might want and also has a brand new shopping mall attached (Poznan City Center) .
The people selling tickets are not very fluent in English, at least from my experience. Much better to buy them at the ticket machines which have English menus.
Lot's of coffee places (Starbucks included) that open really early, I believe around 5:30AM, so if you are catching an early train you can rest assured that coffee won't be missing :)