Here's the link to buy (or rather preorder) the first volume of the tankoubon (¥935 for both physical and digital) if you want to support the author: https://amazon.co.jp/dp/404684180X/
Not sure if it actually has anything new. I'd imagine it has new art considering how different the old stuff looks, but I'm clueless on the story front. I'll know better once it actually releases.
Edit: All the panels on the store page look like they're pretty much the same as they were in the original, it's looking more like it's simply a physical release rather than a remake.