I have just released a dev branch of my first ReactJS application which utilises Firebase database. If you are looking to build ReactJS application, then I encourage you to clone my repo and create any PRs which you think will be helpful towards the project. You can also preview my ReactJS blogging app here and please let me know what you think of it.
If you're looking forward to what Laravel 5.3 has to offer then I would definitely recommend that you watch this video of Taylor Otwell which goes into detail on what the latest version has to offer. It is pretty long at 1 hour and 36 minutes, but my gosh is it worth it. https://streamacon.com/video/laracon-us/taylor-otwell-laravel-53-overview