I am now confirming that 1.5 will be the final Sunbeem and Musicalbeem 1.3 will be that one's final updates due to me trying to move on to LBP3 after I finish all of my LBP2 projects and fill up my (LBP2) level space.
I'll only be making a few more Sunbeem games, including a christmas seasonal one because I can.
As mentioned earlier, I will end mainstream general LBP2 support when I am done with Sunbeem 1.5, Musicalbeem 1.3, and Sunbeem Solar 1.2, and other projects.
When I end mainstream support, I will most likely not ever update any of these consoles ever, but I am 100% sure there will be no more First-Party games.
When I move on to LBP3, something new will rise...