I had to be really careful with that title. I tried my best.
Anyway, the folks at Rockman Lab – the same team that are bringing us "Mega Man ZX Prequel" – are in the midst of developing a fan-made Mega Man Zero 5. The project aims to be an authentic, hypothetical fifth entry in the Zero series. It will feature a new story, original stages, enemies and music. It's been in development since 2012 but today we have our first actual look at the fan-game in action. Check out the first preview trailer above.
Regular updates and more information can be found at Rockman Lab's official Z5 hub here. I'm really looking forward to getting my hands on this. More Zero is always a good thing.