Let's see the whole thing from the beginning... The authors released the emu (v0.1) but it had many bugs and random crashes were common; after that they released another version (v0.2) that had some bugs fixed, much less crashes and another input plugin as well as some other features; due to many complains about Win2k incompatibility, the lack of a fullscreen feature and some other things they released another version (v0.25) but unfortunately it broke a couple of games... So a reasonable reason for this "wait" is probably the will of the authors to release something more stable, increase the speed, fix some GFX and sound problems, fix some issues that appeared in v0.25, add a more complete plugin system and maybe to add Win9x compatibility.