Yes there have been lots of rumours, but there was recently a meeting designed to patch up the problems. I don't know the result of that meeting.
Personally I think Oneworld will stick together and become stronger. I'm betting JAL will join at some stage along with Malaysian (if Qantas get a stake). That will make it quite dominant in Asia. The possibility of Aerolineas Argentinas joining (shareholding by Iberia, codeshares with QF etc) would also make it dominant in South America and it is already quite strong in Europe. Qantas' strong link with many small-medium pacific carriers could lead to them becoming 2nd tier members.
Finally, with Sabena/Swissairs' recent links with AA, some pundits have hopefully linked these airlines with Oneworld as Qualiflyer has no global possibilities. This is at best hopeful but if it occured would lead to oneworld becoming by far the largest world alliance grouping.