This was announced by Dennis Woodside, the chief executive officer of Motorola Mobility, who did the keynote at the Motorola Droid Razr launch event that took place on September 5, 2012 at the Gotham Hall in New York City. He said that Motorola is trying to release Android 4.1 Jelly Bean upgrades to all of its new and existing Android devices "very soon". In addition, for any device that is not getting the Jelly Bean update, the owner of the device will get a $100 credit off one of its brand new phones, including the latest Droid Razr M, Droid Razr HD and Droid Razr Maxx HD handsets.
However, Motorola has still not revealed any conditions for this offer, or which devices are eligible for the credit offer. It seems that any Motorola device released in 2011, which will not get the Jelly Bean update, will be eligible for the credit. The details on how to claim the credit is yet to be released.
This is what Motorola’s landing page with the announcement looks like.