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
Atari Announces NEW Console! The 2600 PLUS & Its Kind Of Disappointing!
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
Atari acquires massive Atari archive after revealing a 'new' 2600 that takes cartridges
Atari and Plaion Announce the Atari 2600+ Retro Console
Atari Announces NEW Console! The 2600 PLUS & Its Kind Of Disappointing!
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
Atari 2600 Hardware: Most Up-to-Date Encyclopedia, News & Reviews
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums
A Line at a Time: The Atari 2600, Now with S-Video
Collecting for the 2600+ - Atari 2600+ - AtariAge Forums
The new Atari 2600+ w/HDMI out and 2600/7800 support - Atari 2600+ - AtariAge Forums
Why did you buy the 2600+? - Atari 2600+ - AtariAge Forums
Building the 2600 Plus - a modernised 2600 console - Atari 2600 - AtariAge Forums