Is this Windows verson abandoned?
I installed beta verson about three to four weeks ago, and there has been no update since then while all other apps on MS store have updated almost every weeks.
When will this application import from and export to iPad version, import PDF file, work with Dropbox or any tiny improvement?
Good notes beta is not abandoned, there are updates quite frequently- in your emails you will see them replying to ideas you have supported etc. If good notes is not updating try updating manually.