Plone 4 is about to be released and only a few products have been tested from a compatibility standpoint.
As part of the plan to update our current Plone 3 demo instance to a Plone 4 based demo, I started to test some products in Plone4 and here is a quick tally of my findings. Basically I checked if I could add the product to the buildout, install it, and use it:
* Lineage (added, installed, used)
* Linguaplone (added, installed, used)
* renders horrible with the sunburst theme
* PloneFormGen (added, installed, used)
* CacheSetup (added, installed, didn't try)
* Products.Maps (added, installed, didn't try)
* Plone4Artists video (fail: product not compatible)
* Tune-up announced
* Plone4Artists calendar (fail: product not compatible)
* Easyslideshow (fail: product not compatible)
* Six Feet Up will be working on this product shortly.