https://www.overclock3d.net/news/software/the_oblivion_fan_remaster_skyblivion_is_entering_its_final_stages_of_development/1
 
For those who are unfamiliar with Skyblivion, it's an in-development mode which brings the world of The Elder Scrolls IV: Oblivion into the engine of The Elder Scrolls V: Skyrim, effectively remastering the game with modernised visuals. This mod has been in the works since 2012 from a volunteer group called TESRenewal, who now says that the end of the mod's development is "in sight", confirming that the game's exterior world map is "nearing its final stages of development". To celebrate this, the group has created a new teaser trailer for the mod, which showcases the game world in all of its fantastical glory.   

At this time it is unknown when the mod will be available to gamers, but the team has stated that the game's remaining creatures, weapons, armour sets and 3D assets are being implemented at a rapid pace, though lots of debugging will be required to make everything, including quests, run smoothly. 
 
When the mod releases, it will be available for free. The only requirements for the mod are copies of both Skyrim and Oblivion. More information about Skyblivion is available on the project's official website. 
 
I think this is really cool that people are doing this type of project game development for free.