The tool has a new look (based on Bootstrap) and some new functionality (filter what platforms to generate images for etc). PhoneGap Image Generator Approximately 500 image packs are created per day.

That was not surprising at all, not saying the project was shut down for these obvious reasons: Such an architecture makes the hardware more expensive. The mobile industry is dependent on continuous (preferably yearly) complete phone replacements. Otherwise it would collapse. Report: Google has stopped working on Project Ara