A few months back I was the lucky recipient of all the required components to make myself a "2600 Plus" - this is an amazing project by @john_q_atari which is essentially a re-imagining of the '2600 circuit board with a few extra goodies. That project is available here: the modernised 2600 consol
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
Review: Atari 2600+ - The Grandaddy Of Gaming Is Back
Epsilon's World: Atari 2600+ has arrived
Atari Announces Modernized 2600 Console - Game Informer
Atariage Forum - List of Atariage Discussions and Forums
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
Atari Gamestation Plus - Atari 2600 - AtariAge Forums
The new Atari 2600+ w/HDMI out and 2600/7800 support - Atari 2600+ - AtariAge Forums
Collecting for the 2600+ - Atari 2600+ - AtariAge Forums
What people outside the US should be aware of before buying the new Atari 2600+
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
Atari 2600 (VCS) Repairs - Atari 2600 - AtariAge Forums
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
2600 Plus My modernized 2600 console project - Atari 2600 - AtariAge Forums