I am completely unfamiliar with how betas work for EQ2, but EQ2 has had a lot of expansions over the years. Might have been a beta key for an expansion test server?

Also, I may be completely botching this, but if I recall rightly, EQ2 when it first came out was panned pretty harshly. Over time it's become a much better game. Since it's now free to play, I recently rolled an elf mage and started playing around, and it's pretty darn good. I've messed around with a lot of other MMO's recently (mostly f2p ones, not swtor), and EQ2 was definitely the best one. Very nice graphics/beautiful environment, battle system seemed smooth. Took me a minute to get used to the way you interface with NPC's, and I wasn't a fan of the bag/inventory system, but overall the game reminded me of a very polished wow-type experience.

I didn't really level up though so I have no idea what it's like at level-cap, and for any MMO to be successful, it has to be fun at level cap, so I couldn't grade the game overall, but I had a very good impression of it when just trying it out for a bit.