The next version will have some new features which I'm working on now.
In addition to posting to the official Android Market, I also always post to these 3rd party Android application sites:
SMS Popup v0.9.5
- Reorganized code to prevent "force close" and "application has stopped responding" messages
- Selecting "Reply" will now always clear the notification icon
- Reorganized the WakeLock code to be a lot cleaner