The negativity here is consistent and always humorous to me. Here's the way I see this:
1. It will never be 1998 again
2. There's a large group of people younger than us, or only turning to gaming recently
3. Tablets and portable devices are becoming more and more powerful and ubiquitous
3a. This doesn't mean you ever need to touch one
4. Bringing a game like BG to the iPad and to a larger audience in general is a good thing, as games will only be produced if there's a group of paying customers who want them
I get it, you played these games already. But millions of others haven't. Why are so many people here so grumpy about this? No one will force you to buy the game again, and hopefully more D&D (or D20 style) games will be made. I'm pretty sure the immense success of Skyrim, for example, will encourage other companies to create similar games. This is all a good thing.
And I urge everyone to read again my point #1 above.