The games compatability increase is a definate. Galtor, himself, stated that they are working on this and that it takes a long time to do. Sound is also being worked on, ie: the internal SPU. They are working on better sound emulation (speech? hopefully?) and fixing the crash bug that the SPU has w/DD Help. Other than these two items, what else is coming is still unknown. We'll just have to wait and see.
I have to add my opinnion here.
For people who are whining for more speed, buy a faster system! But problems like skipping sound cannot always be fixed with fast cpu and there is only a little difference in sound cards performance. Speed is good but people think that sound is not important, if it skips you turn it off and be happy. But when it is a little graphics glitch you come here and say "fix this now, i can't see FFIX's GF spell effects particles on the upper right corner" or something like that. All i'm trying to say is that sound comes last in lists what people want. if you want speed buy a new cpu, mboard, graph card. Compatability must be a hard task to achieve, but well worth it. Great to hear that ePSXe team has been working on that. And even greater to HEAR that sound is also improving (or at least worked on ). But anyway They do what they want and we are *very* happy with that ... great emu!