As far as I understand MP2Extended will be coexist to have compatibility to "old" MPE stuff like aMPdroid, WebMP and such. But the new MP2Web Api will offer more possibilities like editing the MP2 Media Library, streaming Live- TV or any other media from your library in any modern browser and so on. Aside this, MP2 Server also will become DLNA compatible so you may use Smart- TV or any other DLNA compatible device as client for MP2 too...