A little over a month ago, PlayStation Portable homebrew developer dan369 gave us a video preview of Legend of Zelda Alpha 4 and now, the coder has released the first public beta release of the said build.

Quite a number of changes were made to the homebrew game, the most notable changes are the complete graphics rework and the new moves. Here's the changelog from dan369's release thread:

Completely revamped gfx by Darrel
ADDED 2 new moves
Shielding and Spin
Changed the Outside levels (only one currently )
Big update to the Inventory screen as it saves your postition

The dev noted that while the most collisions work, some of them don't so we'll have to wait for the future releases to get that ironed out. You can try out the game via the download link below and since this is a public beta, suggestions and bug reports will be much appreciated.