Thank you so much for the kind words and support, it really means a lot!
The rebuild will be released as a major free update rather than as a separate game, so existing owners will not need to purchase it again.
While many players have enjoyed the current version, there have also been some bugs and design issues raised through player feedback and reviews. Rebuilding the game gives me the opportunity to address those issues properly, while also strengthening some of its foundations and expanding on the parts that already work well.