Barbara Falchi Appreciate your eyeballs and attention :-). We're excited to jump start the journey of communication sites now and iterating on what we've got already planned and consistent feedback to refine and validate, and often augment the priorities and planning.
On to your spoecific questions:
1) We certainly focus first on the first party chrome and text out-of-the-box, and know there are methods to enable multi-lingual for the body content customers/users contribute/write; nothing to share at this time, beyond awareness on our end of he space and multi-geo/lingual requirements.
2) The content is no different that if in a team site, meaning that search picks everything up (news, pages, document, list, etc from within the communicaiton site (which is a unique site collection per comm site). And once in the search index, you can do some amazing things, in addition to the content also being captured in your tenant's Microsoft Graph instance - meaning you get items from comm sites flowing in Delve, Discovery tab in OneDrive if it's a document/file, site activities on a site tile within SharePoint home in Office 365, etc. - and you can build a lot of great solutions using the Content by Search web part, or the new Highlighted Content web part.
3) Should be able to using the Content by Search web part - we call this search-based portals/pages
4) News articles are pages in a page library - and go from there :-)