I don't want this critique to sound brutal, so I'll preface it with this: I'm really glad you're doing the work of a redesign. But here are some things you should fix:
In general:
* Way less text.
* Fewer categories.
* Replace the sliding behavior with separate pages and tabs at the top. Get rid of the columnar layout on each slide: it's so wide that it's uncomfortable on my (fairly high resolution) laptop, and it's completely unusable on mobile.
Specifics:
* Add "Download" and "Documentation" (instead of "learn") as top links; these are the most important things people need when they come to the site.
* The recent releases should use the small screenshots, and not have the text. It should be much smaller: just title, screenshot thumbnail, and it's two or three commonmost tags. (Add the date of its release as well.)
* I think tweets and reddit are good ideas (we should be promoting those resources), but lose the videos section: it takes up a lot of space without providing much value and it won't be updated as often as the tweets and reddit sections anyway.
* We can probably cut the About section down to a fifth of its current word count. I can do this if you want. We should also have About section on the front page.