Here's hoping, but as of now I have tell people that have out of warranty Rumble stuff (including myself) that they're SOL.
That is bad. But, Fender does not make everything they sell. Many components that go into the Rumbles are made by other, independent companies. If Fender creates a vacuum big enough, others will step in. That does not, of course, include proprietary parts that they have protected (although a qualified tech could probably repair it).
The member who posted the problem with replacing a blown horn (tweeter) could purchase the one from Amazon and, if a positive match could not be verified, could take them both to a tech for his/her evaluation. If it wasn't a suitable replacement, it could be returned to Amazon for a refund and continue the search...either way it would be cheaper than buying a new amp.
Please correct me if I am over-simplifying this.

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