I have read that there is a "new" high speed train in Poland, and I haven't been able to find much research on it. I'm hoping to take it from Gdansk to Warsaw and then Warsaw to Krakow. Is this possible? Thank you for any help.
Go to the Polrail site and you will see which routes operate the new high speed trains; I checked quickly and there is one from Gdansk to Warsaw, probably another from Warsaw to Krakow.
I just checked yesterday on Polrail for my trip in May, taking the train from Krakow to Warsaw and there is indeed a line marked "new!" that's just 2 1/2 hrs, other options are 3 hrs or more. It costs more, 142 zloty, but that's only about $37 USD. Since I want an e-ticket I'll wait to book until I'm within 30 days of travel.
Yes, trains on those routes have been sped up. When I was there in September 2013, Gdansk to Warsaw was 5 hours with lots of stops, and Warsaw to Krakow was 3 hours with no stops (the train was not too fast, but the lack of stops made it "express."). Now, Gdansk to Warsaw is only 3 hours and Warsaw to Krakow is only 2.5 hours.
Here's advice on buying those tickets, from The Man In Seat 61: http://seat61.com/Poland.htm#Buying%20train%20tickets%20within%20Poland
Thank you for all of your input! It was very helpful and I appreciate it!