Hi @HD321kbps, we currently do not put out full changelogs for either the Canary channel or the Developer channel. We do post release notes that highlight significant fixes, bugs and new features for the Developer channel each week as the update comes out.
We are working on localizing the browser right now, and we will start releasing builds in new languages soon. Once those are out, you can either file feedback through the smiley in the product, or discuss the issues here on our forums.