I just published an update to my app in the market. I then tried to bring it up on the market on my Nexus One running 2.2.2. I could not find it in the market on the phone
After playing some, I found an answer to my issue. When I uploaded the APK to the market, I got a warning "This apk requests 1 native platforms that will be used for Android Market filtering" because I included a JAR file. Once I removed the JAR file, it started showing up again.