Release management is using: http://hg.mozilla.org/build/braindump/file/ed80fdb6a443/releases-related/get_apk.sh to retrieve the apk before uploading them on the google play store. This will need to be updated to manage the new filenames.
I can give it a try or mentor someone on this.
afaik, get_apk.sh is largely managed by relman these days as the release parts they do use this script. Sylvestre, do you need a hand adjusting the script to support new split apk file names? Let me know if I can assist in something here from releng side of things.
I am fine, thanks for asking :)
I believe this is fixed now