Originally Posted by Frozen Fireball 
Is there anything that has changed from the original BG, even a little bit? Can I play this and automatically assume that I have played Baldur's gates?
Content haven't changed except for the additional companions and area (which were not in the original). For the rest it's like playing BG Tutu (BG1 in BG2 engine) with remastered music/sound, improved UI and bug fixes.