Thankfully they are definately updating the old Infinity Engine which is a great thing and promises many UI and scripting optimizations. It may look and run quite different to what we remember. This could make me actually play it.
Baldur’s Gate: Enhanced Edition™ and Baldur’s Gate II: Enhanced Edition™ will feature a re-forged version of the Infinity Engine with a variety of modern improvements.
http://www.baldursgate.com/news/2012...anced-edition/