Oh, for those of you on Sprint who want to try the speakerphone3.zip patch, I just changed the home/menu buttons and made it say Sprint instead of Virgin Mobile. Probably not the most efficient way, but it was quick and I didn't feel like digging into any files.
Just "adb pull" these files and make backups on your computer:
/system/usr/keylayout (the whole folder)
/system/framework/framework-res.apk
/system/build.prop
Then remove them and push replacements from the latest previous build (beta1pre3). I did this all in recovery, and also restored boot.img (probably totally unnecessary, but it was quick). The whole process was maybe 5 min tops including boot time. There's probably a better way to do this, but it's quick/easy.
Just wait for the nightly tomorrow morning, it'll be there.