I first chose "Yes" but then changed my vote to "Sometimes" like hans, because I have to admit, I don't necessarily play through every new release, depending on what it is. But I always check the archive and take notice of new releases, and if it's something I'm interested in, I will play it sooner or later.
It's more likely that I will play it, if ....
... it's short.
... focused on story.
... has original ideas beyond the standard fantasy tropes, or at least quite engaging storytelling.
... it uses a more unusual and rare setting that I'm fan of or curious about (Planescape, Oriental, Modern/Sci-Fi, Ravenloft/Horror etc.)
... has some custom graphics (French vanilla), or if it's properly hacked (new frame etc.).
... it's by a well-known author whose work I like, or by a debut author who's completely unknown to me, or by someone explicitly asking for constructive feedback
It's less likely that I will play it, if ....
... it promises to be of epic length.
... it's mostly hack and slash, with little storytelling.
... it has lots of random combats.
... it only uses default graphics.
That being said, I would still try out e.g. a design with default graphics that is short and focused on storytelling, or a design with lots of combat, if it's accompanied by an exciting story, original ideas and/or beautiful graphics.