Today there was a press note from Nokia about their new browser for Series 60 based on KHTML.
Some people, like quiris, without thinking much, wrote that Nokia has chosen KHTML (he also trolled some more, but nothing worth citing).
From what I heard from Doug Turner, Minimo leader, Nokia did not change their involvement in developing Minimo.
He also told me that this new browser is developed for Symbian OS, while Minimo team has no active port of their app for Symbian.
The next release of Minimo should be out, according to Doug, in a few weeks.