Hello,
Looks like this year is good for new ufo remakes
I have found yet another new project. It's in beginning stage. At now it's look more of a prototype than a game. There aren't many information on project site.
This project is open source and it's written in C language. Looks like it's designed to be multiplatform.
Page of this project is located here:
http://ufo.alcopop.org/Unfortunately i haven't found any email to the author, so contacting him can be difficult.