Hi, I should point out that the new release is a remake of most of the original game (levels, enemies, mechanics) in order to fulfill my vision for a high quality game. This new game will play quite differently from the first, but it will still be familiar. This is why development is taking so long. I hope to get the game out there in a big way as soon as it is ready.
Anyways, I am happy to answer your questions.
1. No planned release date yet. I am hoping to get a trailer (maybe even a free demo) released in the next couple months.
2. I have not decided on a price yet but there are always other ways to get a game.
3. Easter eggs are pretty likely.
4. A level editor would be awesome, but it's not going being worked on for a while since I am focusing on the game itself.
5. Multiplayer would be even more awesome, but that would force me to rewrite a lot of code and spend even more time balancing said multiplayer once it works. I am focusing on the singleplayer experience for now.
By the way, once the trailer is out, I'll be making an official Discord server. Thanks!