will deeper dungeons be added?

Nope.

At least not for a while, it would seem there are some legal issues preventing GoG from releasing them.

thank you for telling me

When it is added, will it be provided for free for people who already purchased DK?

I would imagine so. It's not really a huge add on and I'm not certain if it was ever sold separately. Does anyone know if it was?

I believe it was in the UK, but I don't know anyone who ever bought it - most got it as part of DK gold; I never bothreed with it first time round.

I have it on a disc alright but it came as a bundle with a pc I think. It also had a windows 95 extra goodies cd too. It is a bit strange that there are such issues with it really. I can't imagine what they could be if GOG can get the likes of System Shock 2.

EA legal stuff, only thing that seems to work is wait and see.
This is a problem since EA games appeared on GOG and we all pretty much gave up hope of ever seeing the missing Expansions until GOG surprised everyone for Christmas and added the missing Expansions for Alpha Centauri, Wing Commander 1+2 and Wing Commander: Privateer. Although there are still many Expansions missing, there seems to be still hope.
Oh and I don't believe GOG will ever sell (Non-Standalone) Expansion of old games without the base game. And when they get distribution rights to Expansions for games they already have they so far always added them for free. They even added Betrayal in Antara to Betrayal at Krondor although this 2 games had nothing in common except for the engine and perhaps the development team. I seem to remember that I read GOG added it for free because it can not be sold separately because of the complicated legal situation of Antara.

It was sold in the US as well. I played it years ago and think you could get it before Gold came out. I would sure like to play it again. I did Keeper again after all this time and loved it. As I recall the Deeper Dungeons where quite a bit harder but then it has been a while. Guess we will just have to wait...