What would be the most official place to get the ETH POS date?

I've been amateur mining for about a half year with multiple desktops/laptops and I love it. I'd actually like to try and build a rig of about 6 cards at this point but I realize I'm very late to the game and it might not even make financial sense to get involved now. The most recent buzz for ETH POS is for the middle of this year, but I'm aware that we've been getting pushed back for years already. What would be the most official place where I could see the ETH team's calendar of when they expect this to happen? Also any general advice on whether mining is still a good idea or not at this point would be welcome. Thanks in advance.