2 Player Productions has created an excellent retrospective on Psychonauts titled The Color of Your World. This 50 minute retrospective has been posted in three parts on YouTube. You can view the first part embedded below, or directly here, and the other other parts can be selected from the annotations at the end of the video. Or, alternatively you can, you can view part two directly here, and part three directly here.
The Psychonauts Fig campaign is doing well so far. It's currently nearly 75% funded with 31 days left to go. So, there's plenty of time to back it if you haven't. If you feel like playing a social media game, Double Fine has set one up for the campaign, which is a neat new twist on their social media campaign from the original Psychonauts which used Friendster and Myspace (remember those relics of the internet from 10 years ago?), this time using modern social media like Facebook, Twitter, Tumbler, Vine, and YouTube and combining them with achievements.
Although, unlike usual video game achievements, you actually get tangible rewards for playing this game. Once enough people hit a goal, everyone who follows the campaign will get fun stuff like this retrospective, which was the first goal hit. The next goal is previously unseen concept art from the original Psychonauts. The social media game is a completely optional part of the campaign, but if you want to join in on the fun, join the PSI Cadets.
E: According to Kickstarter comments, should be earliest in March 2016. Still a little bit of wait...