The new version 4.0.4 introduced information about the movies runtime, and a runtime filter has been added.
As you've noticed, a lot of new features have been added recently, and I can't resist to tell you what's coming next:
1) you'll be able to click the plot of a movie to display it in a separate window. In addition to the plot, that window will hold three more fields: MyPlot, MyReview and MyNotes. As you've understood, you'll be able to add your own plot if you don't like the current one, you'll be able to write a personal review of the movie, and you'll be able to write anything you want (personal notes) about the movie. You'll have the option to publish your movie reviews online, for your friends to know more precisely why you liked or disliked a movie.
2) the program will include information about series episodes. To begin with, the red "series" icon will be replaced by the number of episodes. For example "120 ep." if the series has 120 episodes. When you'll click the icon, a window will pop up, with the list of all the episodes, ordered by seasons, with their name, their air date, their IMDb rating and popularity, and a direct link to the IMDb. You'll be able to rate an episode or an entire season. If you've rated/seen 110 episodes, the icon will now display "110/120 ep.".
3) Coollector Movie Database is great to manage your collection, but it's not that great to enjoy it from the comfort of your TV. For that, it's better to use a media center like XBMC. What's great with XBMC, it's that it has an http protocol that allows Coollector to take control of it, even from a remote computer (I've tested it, and it works great). So you'll keep managing your data with Coollector, then you'll synchronize it with XBMC, and finally you'll enjoy it on your TV with XBMC. Even your owned DVDs can be exported to XBMC, in the form of a "stub". When you select a stub, XBMC just asks you to insert the disk (to help you, Coollector will have added the location of the DVD). It's also possible to export playlists, etc... etc...
4) Coollector needs an import feature, to import data from other programs or websites. Seriously, that feature should have been added a long time ago...