Ionic 4 - Is now a good time to migrate?

I have been working on a V3 application which is to be released early next year. I am at a cross roads whether to migrate to v4 now which if I do would mean less work in the long run.

I have been religiously following the beta updates of Ionic 4 which at this time of post is at beta 8. From what I see the bugs being fixed are not major flaws but just minor nuances.

So my question to the devs on the beta is the system stable enough to warrant me to start the migration from v3 to v4? Also how far away do people think we are for the beta to be finished and the official release?

Many thanks in advance.

beta 6 and 5 had some breaking changes. they may have more.