It's been a while, but it looks like Dragula96 has been keeping busy with polishing up Tetriabetes. The developer visited the forums earlier to announce that this homebrew game's 1.50 beta 2 is now available for download.

This particular release implements the Invisible Blocks mode, which should be a comfort for the guys who thought the game was getting too easy. As for a recap of the other changes that were implemented in the previous donations-only releases:

1.50b1 Changes

• Added the "random bag" A.K.A. "7 system"
• This makes the game 20x better!
• No more waiting forever for that I piece, every piece is a maximum of only 12 drops Away!

Dragula96 notes that Tetriabetes's future build will carry skin support and better optimization. The devs indicates that ver 1.50's last update will also be Tetriabetes' last build, unless more bugs need to be fixed. Further details on the game's previous changes are available in the file bundle's readme. You may also want to visit Dragula96's release thread at the QJ.NET PSP Development Forum if you're interested in leaving your feedback.

Download: Tetriabetes 1.50b2