A new edition has not been announced. In fact, WotC started the announcement by emphatically stating that they are NOT doing editions any longer, and that it will just be "D&D," based on the 5e rules with incremental change over time. You will still be able to use all your 5e materials because it will still be 5e, in effect.
So I haven't thought about switching anything over because I don't need to. Any more than I worried about wrapping things up in preparation for Tasha's, etc.
Edit: honestly, a lot of these responses indicate that people either are not actually watching/reading WotC's releases, or just refuse to accept their words.