The AMA was very interesting. I recommend everyone that likes EE games to read it.
They plan to release something currently called Adventure Y in first part of 2015 which is probably going to be an expansion for BGEE or BG2EE. It will have more of Irenicus and some other characters. It cost them pretty penny to get those voice actors back.
For those that didn't know (like me) they also say that Baeloth from BGEE is voiced by none other but Commander Shepard (voice actor of course).
BG3 will most likely be 5th edition, but they said the talks with wizards have not come that far yet. They want BG3 to continue the story of same charname you played in BG1 and BG2.
They want to do PST:EE but they have not spent enough time looking into its code to see how doable it is.
They plan to put into BGEE and BG2EE some of the stuff they put into IWDEE (for sure new classes and hopefully new spells as well). BG2EE has an upcoming big patch that they want to release before Christmas. Also BG2EE is coming to android soon.
They also said sales on PC were bigger than expected. Also android sold lots of BGEE units. They also said the webpage had 1.3 million hits when it was first shown to public
They apologized for BG2EE release and said they released too early and will not do the same mistake again and in the future plan to go for maximum quality and as such will no longer give release dates until they are 100% sure of those.
Trent said he contacted Obsidian to ask to licence their PoE engine but both sides have been pretty busy and the talk didn't happen yet.
They said in the future they hope to focus more on new D&D games/content instead of doing EE versions.
They also said they have been asking about doing NWN1EE but it seems that process is very complicated and it is in some legal limbo atm.