Insofar as that means that the 'great inflation'is well and truly finished, that is a good thing, provided of course that we are alert to the new sorts of risks which can emerge. There is probably a bit too much emotive baggage which is carried about with the word 'deflation'.
For the average country, a short-lived experience with mild deflation, if it occurred, would be not the end of the world, nor even unprecedented. It would just be a sign that there is a problem of insufficient aggregate demand which ideally should have been avoided, but which, failing that, should be addressed quickly.