Bug fixes an updates will continue to be released for the single products.
Upgrades, however, which would be major new releases, will not be released for the single extension.
So for example, Framework builder 1 updates will be made available, but Framework Builder 2 would not be available as a stand alone extension.
Updates (minor version releases) have always been made available to owners of the existing extensions.
Upgrades (major releases with new features) have always been made available to existing users at a discounted price.