As if. Not to mention she would have to deal with Warner to release a GH, so a third album with Interscope is definitely coming, even if it's something she puts together in a week.
I just think she really focused on this album and wanted to deliver a great album that her fans wanted. This Album has surpassed my expectations so far!
I haven't even listened to her new music (except for "Living for Love") and have no desire to, but I'm positive it's not her last. She's Madonna. I feel like she's never going to properly retire. She will pass away before she stops making music. Madonna is one of these artists that really views her music as art and has so many ideas that I can't imagine her ever stopping, to be honest. Plus, apparently she has one more album that she has to release through Interscope according to her contract, and I highly doubt it will be a greatest hits album.