TL;DR of the post, generated automatically.

A developer shares a short update on VoidSong, a pixel art game they're still working on, and says it looks like Cave Story.

• Update: The post is a casual progress note, with no release date, download link, or details beyond the hashtags.
• Comparison: The poster calls it "Uh uh doukutsu monogatari lookin ass," the Japanese title of Cave Story, which they use as the reference point.
• Tags: #pixelart, #indiegame, #gamedev and #CaveStory are the only other context the post gives.