is there anything official on xcloud app for AndroidTV and LAN streaming

No, the Streaming app for xCloud allows for online play of those xCloud games or will allow you to stream your Xbox games to your phone.

Are you talking about streaming from an Xbox 360 device, or streaming 360 backwards compatible games on the Xbox One? I thought you could already stream the 360 games on Xbox One via the Xbox Console Companion app on Windows or Xbox Streaming app on mobile
(streaming from your console). Or are you talking about 360 games via xCloud? If it's xCloud, then they haven't said, but I would imagine they would add some titles from 360 and original Xbox via the service. I don't know what goes into getting each title
into and work with the service, but it would be cool and can't be too bad compared to Xbox One titles as they improve the service.

To clarify, they have not announced anything, so no official word, but it is not impossible and I would say (again, stressing this is speculation) that it is likely as the service is fleshed out.

Xcloud is available officially here, xcloud 'ON CONSOLE' isn't.

No vpn to bypass anything, it should be working properly on browser but it isn't.

Are you trying to use the Game Streaming app? Xcloud was moved to the Game Pass app.

The Game Streaming with Project xCloud is supposed be coming to Windows 10 this year. I would assume/hope they will keep supporting the Xbox Console Companion for streaming until that is officially launched and available.