I will also suggest to go visit the Announcements (Altcoins) board.
thats right by visiting announcements board in this forum is the best way to to know about new blockchain projects
because i always visit that board to find a new promissing blockchain project
you can also head to its child board - Tokens (Altcoins). these 2 sections alone will give you more than what you ask for. everyday you will see project/s being launched. and up to you what preferences are you looking for in a project.
and if you find one or two, just follow them closely via their socmeds because thats where they post their latest updates and get a hint where the project is heading to...