New in Sparkle 1.5:
- Optionally sends user demographic information to the server when checking for updates.
- Supports bundles, preference panes, plugins, and other non-.app software.
- Dual-mode garbage collection support for any memory management style.
- Supports branches due to minimum OS version requirements.
- Sparkle doesn't bug the user until second launch for better first impressions.
- Deep delegate support to make Sparkle work exactly as you need.
- Sparkle can install .pkg files for more complicated products.
- Tons of other stuff!